Home / 18,972.72-26,158.01-15,557.15

Finding the Fourth Proportional to 18,972.72, 26,158.01 and 15,557.15

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Solution

The fourth proportional to 18,972.72, 26,158.01 and 15,557.15 is: 21,448.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.72 : 26,158.01 = 15,557.15 : x
  2. Step 2: Convert to fraction form
    18,972.72/26,158.01 = 15,557.15/x
  3. Step 3: Cross multiply
    18,972.72x = 26,158.01 × 15,557.15
  4. Step 4: Simplify right side
    18,972.72x = 406,944,057.01
  5. Step 5: Solve for x
    x = 406,944,057.01/18,972.72
  6. Step 6: Final answer
    x = 21,448.90

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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.