Home / 28,313.17-42,470.01-8,591.72

Finding the Fourth Proportional to 28,313.17, 42,470.01 and 8,591.72

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Solution

The fourth proportional to 28,313.17, 42,470.01 and 8,591.72 is: 12,887.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,313.17 : 42,470.01 = 8,591.72 : x
  2. Step 2: Convert to fraction form
    28,313.17/42,470.01 = 8,591.72/x
  3. Step 3: Cross multiply
    28,313.17x = 42,470.01 × 8,591.72
  4. Step 4: Simplify right side
    28,313.17x = 364,890,604.01
  5. Step 5: Solve for x
    x = 364,890,604.01/28,313.17
  6. Step 6: Final answer
    x = 12,887.66

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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.