Home / 15,461.44-21,331.20-10,159.12

Finding the Fourth Proportional to 15,461.44, 21,331.20 and 10,159.12

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Solution

The fourth proportional to 15,461.44, 21,331.20 and 10,159.12 is: 14,015.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,461.44 : 21,331.20 = 10,159.12 : x
  2. Step 2: Convert to fraction form
    15,461.44/21,331.20 = 10,159.12/x
  3. Step 3: Cross multiply
    15,461.44x = 21,331.20 × 10,159.12
  4. Step 4: Simplify right side
    15,461.44x = 216,706,220.54
  5. Step 5: Solve for x
    x = 216,706,220.54/15,461.44
  6. Step 6: Final answer
    x = 14,015.91

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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.