Home / 18,699.38-28,007.86-15,456.86

Finding the Fourth Proportional to 18,699.38, 28,007.86 and 15,456.86

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Solution

The fourth proportional to 18,699.38, 28,007.86 and 15,456.86 is: 23,151.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.38 : 28,007.86 = 15,456.86 : x
  2. Step 2: Convert to fraction form
    18,699.38/28,007.86 = 15,456.86/x
  3. Step 3: Cross multiply
    18,699.38x = 28,007.86 × 15,456.86
  4. Step 4: Simplify right side
    18,699.38x = 432,913,570.92
  5. Step 5: Solve for x
    x = 432,913,570.92/18,699.38
  6. Step 6: Final answer
    x = 23,151.23

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1.5x scale

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.