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Finding the Fourth Proportional to 39,874.40, 59,782.80 and 16,488.80

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Solution

The fourth proportional to 39,874.40, 59,782.80 and 16,488.80 is: 24,721.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,874.40 : 59,782.80 = 16,488.80 : x
  2. Step 2: Convert to fraction form
    39,874.40/59,782.80 = 16,488.80/x
  3. Step 3: Cross multiply
    39,874.40x = 59,782.80 × 16,488.80
  4. Step 4: Simplify right side
    39,874.40x = 985,746,632.64
  5. Step 5: Solve for x
    x = 985,746,632.64/39,874.40
  6. Step 6: Final answer
    x = 24,721.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.