Home / 12,116.10-18,152.55-9,912.90

Finding the Fourth Proportional to 12,116.10, 18,152.55 and 9,912.90

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Solution

The fourth proportional to 12,116.10, 18,152.55 and 9,912.90 is: 14,851.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116.10 : 18,152.55 = 9,912.90 : x
  2. Step 2: Convert to fraction form
    12,116.10/18,152.55 = 9,912.90/x
  3. Step 3: Cross multiply
    12,116.10x = 18,152.55 × 9,912.90
  4. Step 4: Simplify right side
    12,116.10x = 179,944,412.90
  5. Step 5: Solve for x
    x = 179,944,412.90/12,116.10
  6. Step 6: Final answer
    x = 14,851.68

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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.