Home / 20,487.77-28,281.07-16,012.97

Finding the Fourth Proportional to 20,487.77, 28,281.07 and 16,012.97

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Solution

The fourth proportional to 20,487.77, 28,281.07 and 16,012.97 is: 22,104.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.77 : 28,281.07 = 16,012.97 : x
  2. Step 2: Convert to fraction form
    20,487.77/28,281.07 = 16,012.97/x
  3. Step 3: Cross multiply
    20,487.77x = 28,281.07 × 16,012.97
  4. Step 4: Simplify right side
    20,487.77x = 452,863,979.15
  5. Step 5: Solve for x
    x = 452,863,979.15/20,487.77
  6. Step 6: Final answer
    x = 22,104.11

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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.