Home / 39,387.97-54,354.93-21,483.12

Finding the Fourth Proportional to 39,387.97, 54,354.93 and 21,483.12

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Solution

The fourth proportional to 39,387.97, 54,354.93 and 21,483.12 is: 29,646.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,387.97 : 54,354.93 = 21,483.12 : x
  2. Step 2: Convert to fraction form
    39,387.97/54,354.93 = 21,483.12/x
  3. Step 3: Cross multiply
    39,387.97x = 54,354.93 × 21,483.12
  4. Step 4: Simplify right side
    39,387.97x = 1,167,713,483.78
  5. Step 5: Solve for x
    x = 1,167,713,483.78/39,387.97
  6. Step 6: Final answer
    x = 29,646.45

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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.