Home / 39,036.18-53,869.86-21,131.13

Finding the Fourth Proportional to 39,036.18, 53,869.86 and 21,131.13

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Solution

The fourth proportional to 39,036.18, 53,869.86 and 21,131.13 is: 29,160.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,036.18 : 53,869.86 = 21,131.13 : x
  2. Step 2: Convert to fraction form
    39,036.18/53,869.86 = 21,131.13/x
  3. Step 3: Cross multiply
    39,036.18x = 53,869.86 × 21,131.13
  4. Step 4: Simplify right side
    39,036.18x = 1,138,330,913.74
  5. Step 5: Solve for x
    x = 1,138,330,913.74/39,036.18
  6. Step 6: Final answer
    x = 29,160.92

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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.