Home / 10,064.10-15,108.30-9,991.20

Finding the Fourth Proportional to 10,064.10, 15,108.30 and 9,991.20

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Solution

The fourth proportional to 10,064.10, 15,108.30 and 9,991.20 is: 14,998.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,064.10 : 15,108.30 = 9,991.20 : x
  2. Step 2: Convert to fraction form
    10,064.10/15,108.30 = 9,991.20/x
  3. Step 3: Cross multiply
    10,064.10x = 15,108.30 × 9,991.20
  4. Step 4: Simplify right side
    10,064.10x = 150,950,046.96
  5. Step 5: Solve for x
    x = 150,950,046.96/10,064.10
  6. Step 6: Final answer
    x = 14,998.86

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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.