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Finding the Fourth Proportional to 10,512.61, 14,502.61 and 6,978.17

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Solution

The fourth proportional to 10,512.61, 14,502.61 and 6,978.17 is: 9,626.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,512.61 : 14,502.61 = 6,978.17 : x
  2. Step 2: Convert to fraction form
    10,512.61/14,502.61 = 6,978.17/x
  3. Step 3: Cross multiply
    10,512.61x = 14,502.61 × 6,978.17
  4. Step 4: Simplify right side
    10,512.61x = 101,201,723.00
  5. Step 5: Solve for x
    x = 101,201,723.00/10,512.61
  6. Step 6: Final answer
    x = 9,626.70

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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.