Home / 39,061.19-53,904.08-21,155.12

Finding the Fourth Proportional to 39,061.19, 53,904.08 and 21,155.12

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Solution

The fourth proportional to 39,061.19, 53,904.08 and 21,155.12 is: 29,193.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,061.19 : 53,904.08 = 21,155.12 : x
  2. Step 2: Convert to fraction form
    39,061.19/53,904.08 = 21,155.12/x
  3. Step 3: Cross multiply
    39,061.19x = 53,904.08 × 21,155.12
  4. Step 4: Simplify right side
    39,061.19x = 1,140,347,569.61
  5. Step 5: Solve for x
    x = 1,140,347,569.61/39,061.19
  6. Step 6: Final answer
    x = 29,193.88

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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.