Home / 22,576.20-31,157.10-13,145.64

Finding the Fourth Proportional to 22,576.20, 31,157.10 and 13,145.64

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Solution

The fourth proportional to 22,576.20, 31,157.10 and 13,145.64 is: 18,142.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,576.20 : 31,157.10 = 13,145.64 : x
  2. Step 2: Convert to fraction form
    22,576.20/31,157.10 = 13,145.64/x
  3. Step 3: Cross multiply
    22,576.20x = 31,157.10 × 13,145.64
  4. Step 4: Simplify right side
    22,576.20x = 409,580,020.04
  5. Step 5: Solve for x
    x = 409,580,020.04/22,576.20
  6. Step 6: Final answer
    x = 18,142.12

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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.