Home / 10,122.98-15,186.15-8,281.31

Finding the Fourth Proportional to 10,122.98, 15,186.15 and 8,281.31

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Solution

The fourth proportional to 10,122.98, 15,186.15 and 8,281.31 is: 12,423.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.98 : 15,186.15 = 8,281.31 : x
  2. Step 2: Convert to fraction form
    10,122.98/15,186.15 = 8,281.31/x
  3. Step 3: Cross multiply
    10,122.98x = 15,186.15 × 8,281.31
  4. Step 4: Simplify right side
    10,122.98x = 125,761,139.93
  5. Step 5: Solve for x
    x = 125,761,139.93/10,122.98
  6. Step 6: Final answer
    x = 12,423.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.