Home / 13,292.20-19,938.30-11,105.20

Finding the Fourth Proportional to 13,292.20, 19,938.30 and 11,105.20

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Solution

The fourth proportional to 13,292.20, 19,938.30 and 11,105.20 is: 16,657.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,292.20 : 19,938.30 = 11,105.20 : x
  2. Step 2: Convert to fraction form
    13,292.20/19,938.30 = 11,105.20/x
  3. Step 3: Cross multiply
    13,292.20x = 19,938.30 × 11,105.20
  4. Step 4: Simplify right side
    13,292.20x = 221,418,809.16
  5. Step 5: Solve for x
    x = 221,418,809.16/13,292.20
  6. Step 6: Final answer
    x = 16,657.80

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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.