Home / 22,718.56-31,344.32-13,763.20

Finding the Fourth Proportional to 22,718.56, 31,344.32 and 13,763.20

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Solution

The fourth proportional to 22,718.56, 31,344.32 and 13,763.20 is: 18,988.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,718.56 : 31,344.32 = 13,763.20 : x
  2. Step 2: Convert to fraction form
    22,718.56/31,344.32 = 13,763.20/x
  3. Step 3: Cross multiply
    22,718.56x = 31,344.32 × 13,763.20
  4. Step 4: Simplify right side
    22,718.56x = 431,398,145.02
  5. Step 5: Solve for x
    x = 431,398,145.02/22,718.56
  6. Step 6: Final answer
    x = 18,988.80

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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.