Home / 22,865.28-31,536.30-15,309.21

Finding the Fourth Proportional to 22,865.28, 31,536.30 and 15,309.21

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Solution

The fourth proportional to 22,865.28, 31,536.30 and 15,309.21 is: 21,114.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,865.28 : 31,536.30 = 15,309.21 : x
  2. Step 2: Convert to fraction form
    22,865.28/31,536.30 = 15,309.21/x
  3. Step 3: Cross multiply
    22,865.28x = 31,536.30 × 15,309.21
  4. Step 4: Simplify right side
    22,865.28x = 482,795,839.32
  5. Step 5: Solve for x
    x = 482,795,839.32/22,865.28
  6. Step 6: Final answer
    x = 21,114.80

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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.