Home / 14,920.20-22,331.70-11,971.80

Finding the Fourth Proportional to 14,920.20, 22,331.70 and 11,971.80

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Solution

The fourth proportional to 14,920.20, 22,331.70 and 11,971.80 is: 17,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920.20 : 22,331.70 = 11,971.80 : x
  2. Step 2: Convert to fraction form
    14,920.20/22,331.70 = 11,971.80/x
  3. Step 3: Cross multiply
    14,920.20x = 22,331.70 × 11,971.80
  4. Step 4: Simplify right side
    14,920.20x = 267,350,646.06
  5. Step 5: Solve for x
    x = 267,350,646.06/14,920.20
  6. Step 6: Final answer
    x = 17,918.70

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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.