Home / 20,909.41-28,866.18-16,118.89

Finding the Fourth Proportional to 20,909.41, 28,866.18 and 16,118.89

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Solution

The fourth proportional to 20,909.41, 28,866.18 and 16,118.89 is: 22,252.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,909.41 : 28,866.18 = 16,118.89 : x
  2. Step 2: Convert to fraction form
    20,909.41/28,866.18 = 16,118.89/x
  3. Step 3: Cross multiply
    20,909.41x = 28,866.18 × 16,118.89
  4. Step 4: Simplify right side
    20,909.41x = 465,290,780.14
  5. Step 5: Solve for x
    x = 465,290,780.14/20,909.41
  6. Step 6: Final answer
    x = 22,252.70

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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.