Home / 38,513.92-53,149.28-21,518.19

Finding the Fourth Proportional to 38,513.92, 53,149.28 and 21,518.19

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Solution

The fourth proportional to 38,513.92, 53,149.28 and 21,518.19 is: 29,695.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,513.92 : 53,149.28 = 21,518.19 : x
  2. Step 2: Convert to fraction form
    38,513.92/53,149.28 = 21,518.19/x
  3. Step 3: Cross multiply
    38,513.92x = 53,149.28 × 21,518.19
  4. Step 4: Simplify right side
    38,513.92x = 1,143,676,305.40
  5. Step 5: Solve for x
    x = 1,143,676,305.40/38,513.92
  6. Step 6: Final answer
    x = 29,695.14

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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.