Home / 39,042.52-53,877.68-21,815.02

Finding the Fourth Proportional to 39,042.52, 53,877.68 and 21,815.02

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Solution

The fourth proportional to 39,042.52, 53,877.68 and 21,815.02 is: 30,104.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,042.52 : 53,877.68 = 21,815.02 : x
  2. Step 2: Convert to fraction form
    39,042.52/53,877.68 = 21,815.02/x
  3. Step 3: Cross multiply
    39,042.52x = 53,877.68 × 21,815.02
  4. Step 4: Simplify right side
    39,042.52x = 1,175,342,666.75
  5. Step 5: Solve for x
    x = 1,175,342,666.75/39,042.52
  6. Step 6: Final answer
    x = 30,104.17

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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.