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Finding the Fourth Proportional to 28,345.95, 42,520.95 and 8,624.41

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Solution

The fourth proportional to 28,345.95, 42,520.95 and 8,624.41 is: 12,937.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,345.95 : 42,520.95 = 8,624.41 : x
  2. Step 2: Convert to fraction form
    28,345.95/42,520.95 = 8,624.41/x
  3. Step 3: Cross multiply
    28,345.95x = 42,520.95 × 8,624.41
  4. Step 4: Simplify right side
    28,345.95x = 366,718,000.09
  5. Step 5: Solve for x
    x = 366,718,000.09/28,345.95
  6. Step 6: Final answer
    x = 12,937.23

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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.