Home / 25,111.38-34,638.12-15,555.81

Finding the Fourth Proportional to 25,111.38, 34,638.12 and 15,555.81

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Solution

The fourth proportional to 25,111.38, 34,638.12 and 15,555.81 is: 21,457.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,111.38 : 34,638.12 = 15,555.81 : x
  2. Step 2: Convert to fraction form
    25,111.38/34,638.12 = 15,555.81/x
  3. Step 3: Cross multiply
    25,111.38x = 34,638.12 × 15,555.81
  4. Step 4: Simplify right side
    25,111.38x = 538,824,013.48
  5. Step 5: Solve for x
    x = 538,824,013.48/25,111.38
  6. Step 6: Final answer
    x = 21,457.36

Related Problems

Find fourth proportional to 12,555.69, 17,319.06 and 7,777.91
Half scale
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Double scale
Find fourth proportional to 25,112.38, 34,639.50 and 15,556.81
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.