Home / 39,577.29-54,616.75-21,428.19

Finding the Fourth Proportional to 39,577.29, 54,616.75 and 21,428.19

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Solution

The fourth proportional to 39,577.29, 54,616.75 and 21,428.19 is: 29,570.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,577.29 : 54,616.75 = 21,428.19 : x
  2. Step 2: Convert to fraction form
    39,577.29/54,616.75 = 21,428.19/x
  3. Step 3: Cross multiply
    39,577.29x = 54,616.75 × 21,428.19
  4. Step 4: Simplify right side
    39,577.29x = 1,170,338,042.61
  5. Step 5: Solve for x
    x = 1,170,338,042.61/39,577.29
  6. Step 6: Final answer
    x = 29,570.95

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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.