Home / 39,358.20-54,314.62-21,453.14

Finding the Fourth Proportional to 39,358.20, 54,314.62 and 21,453.14

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Solution

The fourth proportional to 39,358.20, 54,314.62 and 21,453.14 is: 29,605.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,358.20 : 54,314.62 = 21,453.14 : x
  2. Step 2: Convert to fraction form
    39,358.20/54,314.62 = 21,453.14/x
  3. Step 3: Cross multiply
    39,358.20x = 54,314.62 × 21,453.14
  4. Step 4: Simplify right side
    39,358.20x = 1,165,219,146.91
  5. Step 5: Solve for x
    x = 1,165,219,146.91/39,358.20
  6. Step 6: Final answer
    x = 29,605.50

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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.