Home / 10,160.68-14,021.30-6,387.72

Finding the Fourth Proportional to 10,160.68, 14,021.30 and 6,387.72

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Solution

The fourth proportional to 10,160.68, 14,021.30 and 6,387.72 is: 8,814.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,160.68 : 14,021.30 = 6,387.72 : x
  2. Step 2: Convert to fraction form
    10,160.68/14,021.30 = 6,387.72/x
  3. Step 3: Cross multiply
    10,160.68x = 14,021.30 × 6,387.72
  4. Step 4: Simplify right side
    10,160.68x = 89,564,138.44
  5. Step 5: Solve for x
    x = 89,564,138.44/10,160.68
  6. Step 6: Final answer
    x = 8,814.78

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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.