Home / 18,981.93-28,434.62-15,892.79

Finding the Fourth Proportional to 18,981.93, 28,434.62 and 15,892.79

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Solution

The fourth proportional to 18,981.93, 28,434.62 and 15,892.79 is: 23,807.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981.93 : 28,434.62 = 15,892.79 : x
  2. Step 2: Convert to fraction form
    18,981.93/28,434.62 = 15,892.79/x
  3. Step 3: Cross multiply
    18,981.93x = 28,434.62 × 15,892.79
  4. Step 4: Simplify right side
    18,981.93x = 451,905,222.75
  5. Step 5: Solve for x
    x = 451,905,222.75/18,981.93
  6. Step 6: Final answer
    x = 23,807.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.