Home / 13,292.20-19,938.30-12,644.20

Finding the Fourth Proportional to 13,292.20, 19,938.30 and 12,644.20

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Solution

The fourth proportional to 13,292.20, 19,938.30 and 12,644.20 is: 18,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,292.20 : 19,938.30 = 12,644.20 : x
  2. Step 2: Convert to fraction form
    13,292.20/19,938.30 = 12,644.20/x
  3. Step 3: Cross multiply
    13,292.20x = 19,938.30 × 12,644.20
  4. Step 4: Simplify right side
    13,292.20x = 252,103,852.86
  5. Step 5: Solve for x
    x = 252,103,852.86/13,292.20
  6. Step 6: Final answer
    x = 18,966.30

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Similar ratio
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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.