Home / 39,508.90-54,521.90-21,603.72

Finding the Fourth Proportional to 39,508.90, 54,521.90 and 21,603.72

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Solution

The fourth proportional to 39,508.90, 54,521.90 and 21,603.72 is: 29,812.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,508.90 : 54,521.90 = 21,603.72 : x
  2. Step 2: Convert to fraction form
    39,508.90/54,521.90 = 21,603.72/x
  3. Step 3: Cross multiply
    39,508.90x = 54,521.90 × 21,603.72
  4. Step 4: Simplify right side
    39,508.90x = 1,177,875,861.47
  5. Step 5: Solve for x
    x = 1,177,875,861.47/39,508.90
  6. Step 6: Final answer
    x = 29,812.92

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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.