Home / 18,428.76-25,437.14-15,937.64

Finding the Fourth Proportional to 18,428.76, 25,437.14 and 15,937.64

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Solution

The fourth proportional to 18,428.76, 25,437.14 and 15,937.64 is: 21,998.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.76 : 25,437.14 = 15,937.64 : x
  2. Step 2: Convert to fraction form
    18,428.76/25,437.14 = 15,937.64/x
  3. Step 3: Cross multiply
    18,428.76x = 25,437.14 × 15,937.64
  4. Step 4: Simplify right side
    18,428.76x = 405,407,979.95
  5. Step 5: Solve for x
    x = 405,407,979.95/18,428.76
  6. Step 6: Final answer
    x = 21,998.66

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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.