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Finding the Fourth Proportional to 10,703.12, 14,755.02 and 8,931.92

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Solution

The fourth proportional to 10,703.12, 14,755.02 and 8,931.92 is: 12,313.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,703.12 : 14,755.02 = 8,931.92 : x
  2. Step 2: Convert to fraction form
    10,703.12/14,755.02 = 8,931.92/x
  3. Step 3: Cross multiply
    10,703.12x = 14,755.02 × 8,931.92
  4. Step 4: Simplify right side
    10,703.12x = 131,790,658.24
  5. Step 5: Solve for x
    x = 131,790,658.24/10,703.12
  6. Step 6: Final answer
    x = 12,313.29

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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.