Home / 20,497.01-28,280.85-13,677.62

Finding the Fourth Proportional to 20,497.01, 28,280.85 and 13,677.62

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Solution

The fourth proportional to 20,497.01, 28,280.85 and 13,677.62 is: 18,871.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497.01 : 28,280.85 = 13,677.62 : x
  2. Step 2: Convert to fraction form
    20,497.01/28,280.85 = 13,677.62/x
  3. Step 3: Cross multiply
    20,497.01x = 28,280.85 × 13,677.62
  4. Step 4: Simplify right side
    20,497.01x = 386,814,719.58
  5. Step 5: Solve for x
    x = 386,814,719.58/20,497.01
  6. Step 6: Final answer
    x = 18,871.76

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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.