Home / 39,031.18-53,863.14-21,126.18

Finding the Fourth Proportional to 39,031.18, 53,863.14 and 21,126.18

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Solution

The fourth proportional to 39,031.18, 53,863.14 and 21,126.18 is: 29,154.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,031.18 : 53,863.14 = 21,126.18 : x
  2. Step 2: Convert to fraction form
    39,031.18/53,863.14 = 21,126.18/x
  3. Step 3: Cross multiply
    39,031.18x = 53,863.14 × 21,126.18
  4. Step 4: Simplify right side
    39,031.18x = 1,137,922,391.01
  5. Step 5: Solve for x
    x = 1,137,922,391.01/39,031.18
  6. Step 6: Final answer
    x = 29,154.19

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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.