Home / 39,442.95-54,430.83-21,538.71

Finding the Fourth Proportional to 39,442.95, 54,430.83 and 21,538.71

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Solution

The fourth proportional to 39,442.95, 54,430.83 and 21,538.71 is: 29,723.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,442.95 : 54,430.83 = 21,538.71 : x
  2. Step 2: Convert to fraction form
    39,442.95/54,430.83 = 21,538.71/x
  3. Step 3: Cross multiply
    39,442.95x = 54,430.83 × 21,538.71
  4. Step 4: Simplify right side
    39,442.95x = 1,172,369,862.43
  5. Step 5: Solve for x
    x = 1,172,369,862.43/39,442.95
  6. Step 6: Final answer
    x = 29,723.18

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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.