Home / 10,387.30-14,338.16-6,138.38

Finding the Fourth Proportional to 10,387.30, 14,338.16 and 6,138.38

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Solution

The fourth proportional to 10,387.30, 14,338.16 and 6,138.38 is: 8,473.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.30 : 14,338.16 = 6,138.38 : x
  2. Step 2: Convert to fraction form
    10,387.30/14,338.16 = 6,138.38/x
  3. Step 3: Cross multiply
    10,387.30x = 14,338.16 × 6,138.38
  4. Step 4: Simplify right side
    10,387.30x = 88,013,056.63
  5. Step 5: Solve for x
    x = 88,013,056.63/10,387.30
  6. Step 6: Final answer
    x = 8,473.14

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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.