Home / 20,565.76-28,380.95-12,068.02

Finding the Fourth Proportional to 20,565.76, 28,380.95 and 12,068.02

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Solution

The fourth proportional to 20,565.76, 28,380.95 and 12,068.02 is: 16,653.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.76 : 28,380.95 = 12,068.02 : x
  2. Step 2: Convert to fraction form
    20,565.76/28,380.95 = 12,068.02/x
  3. Step 3: Cross multiply
    20,565.76x = 28,380.95 × 12,068.02
  4. Step 4: Simplify right side
    20,565.76x = 342,501,872.22
  5. Step 5: Solve for x
    x = 342,501,872.22/20,565.76
  6. Step 6: Final answer
    x = 16,653.99

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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.