Home / 39,780.91-59,658.75-13,479.49

Finding the Fourth Proportional to 39,780.91, 59,658.75 and 13,479.49

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Solution

The fourth proportional to 39,780.91, 59,658.75 and 13,479.49 is: 20,214.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,780.91 : 59,658.75 = 13,479.49 : x
  2. Step 2: Convert to fraction form
    39,780.91/59,658.75 = 13,479.49/x
  3. Step 3: Cross multiply
    39,780.91x = 59,658.75 × 13,479.49
  4. Step 4: Simplify right side
    39,780.91x = 804,169,524.04
  5. Step 5: Solve for x
    x = 804,169,524.04/39,780.91
  6. Step 6: Final answer
    x = 20,214.96

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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.