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Finding the Fourth Proportional to 10,407, 14,361.92 and 6,318.85

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Solution

The fourth proportional to 10,407, 14,361.92 and 6,318.85 is: 8,720.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,407 : 14,361.92 = 6,318.85 : x
  2. Step 2: Convert to fraction form
    10,407/14,361.92 = 6,318.85/x
  3. Step 3: Cross multiply
    10,407x = 14,361.92 × 6,318.85
  4. Step 4: Simplify right side
    10,407x = 90,750,818.19
  5. Step 5: Solve for x
    x = 90,750,818.19/10,407
  6. Step 6: Final answer
    x = 8,720.17

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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.