Home / 39,460.19-54,455.09-21,555.23

Finding the Fourth Proportional to 39,460.19, 54,455.09 and 21,555.23

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Solution

The fourth proportional to 39,460.19, 54,455.09 and 21,555.23 is: 29,746.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,460.19 : 54,455.09 = 21,555.23 : x
  2. Step 2: Convert to fraction form
    39,460.19/54,455.09 = 21,555.23/x
  3. Step 3: Cross multiply
    39,460.19x = 54,455.09 × 21,555.23
  4. Step 4: Simplify right side
    39,460.19x = 1,173,791,609.57
  5. Step 5: Solve for x
    x = 1,173,791,609.57/39,460.19
  6. Step 6: Final answer
    x = 29,746.23

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Half scale
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Double scale
Find fourth proportional to 39,461.19, 54,456.47 and 21,556.23
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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.