Home / 22,720.05-31,352.45-13,158.27

Finding the Fourth Proportional to 22,720.05, 31,352.45 and 13,158.27

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Solution

The fourth proportional to 22,720.05, 31,352.45 and 13,158.27 is: 18,157.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,720.05 : 31,352.45 = 13,158.27 : x
  2. Step 2: Convert to fraction form
    22,720.05/31,352.45 = 13,158.27/x
  3. Step 3: Cross multiply
    22,720.05x = 31,352.45 × 13,158.27
  4. Step 4: Simplify right side
    22,720.05x = 412,543,936.47
  5. Step 5: Solve for x
    x = 412,543,936.47/22,720.05
  6. Step 6: Final answer
    x = 18,157.70

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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.