Home / 39,379.19-54,344.59-21,475.17

Finding the Fourth Proportional to 39,379.19, 54,344.59 and 21,475.17

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Solution

The fourth proportional to 39,379.19, 54,344.59 and 21,475.17 is: 29,636.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,379.19 : 54,344.59 = 21,475.17 : x
  2. Step 2: Convert to fraction form
    39,379.19/54,344.59 = 21,475.17/x
  3. Step 3: Cross multiply
    39,379.19x = 54,344.59 × 21,475.17
  4. Step 4: Simplify right side
    39,379.19x = 1,167,059,255.14
  5. Step 5: Solve for x
    x = 1,167,059,255.14/39,379.19
  6. Step 6: Final answer
    x = 29,636.45

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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.