Home / 22,711.56-31,334.66-13,756.20

Finding the Fourth Proportional to 22,711.56, 31,334.66 and 13,756.20

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Solution

The fourth proportional to 22,711.56, 31,334.66 and 13,756.20 is: 18,979.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,711.56 : 31,334.66 = 13,756.20 : x
  2. Step 2: Convert to fraction form
    22,711.56/31,334.66 = 13,756.20/x
  3. Step 3: Cross multiply
    22,711.56x = 31,334.66 × 13,756.20
  4. Step 4: Simplify right side
    22,711.56x = 431,045,849.89
  5. Step 5: Solve for x
    x = 431,045,849.89/22,711.56
  6. Step 6: Final answer
    x = 18,979.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.