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Finding the Fourth Proportional to 28,034.70, 42,060.15 and 8,313.72

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Solution

The fourth proportional to 28,034.70, 42,060.15 and 8,313.72 is: 12,472.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,034.70 : 42,060.15 = 8,313.72 : x
  2. Step 2: Convert to fraction form
    28,034.70/42,060.15 = 8,313.72/x
  3. Step 3: Cross multiply
    28,034.70x = 42,060.15 × 8,313.72
  4. Step 4: Simplify right side
    28,034.70x = 349,676,310.26
  5. Step 5: Solve for x
    x = 349,676,310.26/28,034.70
  6. Step 6: Final answer
    x = 12,472.98

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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.