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Finding the Fourth Proportional to 10,859.43, 14,982.95 and 6,381.55

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Solution

The fourth proportional to 10,859.43, 14,982.95 and 6,381.55 is: 8,804.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859.43 : 14,982.95 = 6,381.55 : x
  2. Step 2: Convert to fraction form
    10,859.43/14,982.95 = 6,381.55/x
  3. Step 3: Cross multiply
    10,859.43x = 14,982.95 × 6,381.55
  4. Step 4: Simplify right side
    10,859.43x = 95,614,479.26
  5. Step 5: Solve for x
    x = 95,614,479.26/10,859.43
  6. Step 6: Final answer
    x = 8,804.74

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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.