Home / 22,576.48-31,131.20-15,407.20

Finding the Fourth Proportional to 22,576.48, 31,131.20 and 15,407.20

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Solution

The fourth proportional to 22,576.48, 31,131.20 and 15,407.20 is: 21,245.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,576.48 : 31,131.20 = 15,407.20 : x
  2. Step 2: Convert to fraction form
    22,576.48/31,131.20 = 15,407.20/x
  3. Step 3: Cross multiply
    22,576.48x = 31,131.20 × 15,407.20
  4. Step 4: Simplify right side
    22,576.48x = 479,644,624.64
  5. Step 5: Solve for x
    x = 479,644,624.64/22,576.48
  6. Step 6: Final answer
    x = 21,245.32

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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.