Home / 39,289.92-54,220.24-21,385.14

Finding the Fourth Proportional to 39,289.92, 54,220.24 and 21,385.14

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Solution

The fourth proportional to 39,289.92, 54,220.24 and 21,385.14 is: 29,511.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,289.92 : 54,220.24 = 21,385.14 : x
  2. Step 2: Convert to fraction form
    39,289.92/54,220.24 = 21,385.14/x
  3. Step 3: Cross multiply
    39,289.92x = 54,220.24 × 21,385.14
  4. Step 4: Simplify right side
    39,289.92x = 1,159,507,423.23
  5. Step 5: Solve for x
    x = 1,159,507,423.23/39,289.92
  6. Step 6: Final answer
    x = 29,511.58

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Double scale
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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.