Home / 12,100.48-18,157.28-11,219.20

Finding the Fourth Proportional to 12,100.48, 18,157.28 and 11,219.20

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Solution

The fourth proportional to 12,100.48, 18,157.28 and 11,219.20 is: 16,834.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,100.48 : 18,157.28 = 11,219.20 : x
  2. Step 2: Convert to fraction form
    12,100.48/18,157.28 = 11,219.20/x
  3. Step 3: Cross multiply
    12,100.48x = 18,157.28 × 11,219.20
  4. Step 4: Simplify right side
    12,100.48x = 203,710,155.78
  5. Step 5: Solve for x
    x = 203,710,155.78/12,100.48
  6. Step 6: Final answer
    x = 16,834.88

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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.