Home / 22,715.55-31,351.98-13,157.01

Finding the Fourth Proportional to 22,715.55, 31,351.98 and 13,157.01

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Solution

The fourth proportional to 22,715.55, 31,351.98 and 13,157.01 is: 18,159.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,715.55 : 31,351.98 = 13,157.01 : x
  2. Step 2: Convert to fraction form
    22,715.55/31,351.98 = 13,157.01/x
  3. Step 3: Cross multiply
    22,715.55x = 31,351.98 × 13,157.01
  4. Step 4: Simplify right side
    22,715.55x = 412,498,314.38
  5. Step 5: Solve for x
    x = 412,498,314.38/22,715.55
  6. Step 6: Final answer
    x = 18,159.29

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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.