Home / 10,031.28-15,115.90-8,314.84

Finding the Fourth Proportional to 10,031.28, 15,115.90 and 8,314.84

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Solution

The fourth proportional to 10,031.28, 15,115.90 and 8,314.84 is: 12,529.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,031.28 : 15,115.90 = 8,314.84 : x
  2. Step 2: Convert to fraction form
    10,031.28/15,115.90 = 8,314.84/x
  3. Step 3: Cross multiply
    10,031.28x = 15,115.90 × 8,314.84
  4. Step 4: Simplify right side
    10,031.28x = 125,686,218.63
  5. Step 5: Solve for x
    x = 125,686,218.63/10,031.28
  6. Step 6: Final answer
    x = 12,529.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.