Home / 12,113.10-18,148.05-9,909.90

Finding the Fourth Proportional to 12,113.10, 18,148.05 and 9,909.90

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Solution

The fourth proportional to 12,113.10, 18,148.05 and 9,909.90 is: 14,847.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113.10 : 18,148.05 = 9,909.90 : x
  2. Step 2: Convert to fraction form
    12,113.10/18,148.05 = 9,909.90/x
  3. Step 3: Cross multiply
    12,113.10x = 18,148.05 × 9,909.90
  4. Step 4: Simplify right side
    12,113.10x = 179,845,360.70
  5. Step 5: Solve for x
    x = 179,845,360.70/12,113.10
  6. Step 6: Final answer
    x = 14,847.18

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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.