Home / 28,365.38-42,497.31-15,870.86

Finding the Fourth Proportional to 28,365.38, 42,497.31 and 15,870.86

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Solution

The fourth proportional to 28,365.38, 42,497.31 and 15,870.86 is: 23,777.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.38 : 42,497.31 = 15,870.86 : x
  2. Step 2: Convert to fraction form
    28,365.38/42,497.31 = 15,870.86/x
  3. Step 3: Cross multiply
    28,365.38x = 42,497.31 × 15,870.86
  4. Step 4: Simplify right side
    28,365.38x = 674,468,857.39
  5. Step 5: Solve for x
    x = 674,468,857.39/28,365.38
  6. Step 6: Final answer
    x = 23,777.89

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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.