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Finding the Fourth Proportional to 18,007.92, 26,978.13 and 10,590.21

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Solution

The fourth proportional to 18,007.92, 26,978.13 and 10,590.21 is: 15,865.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,007.92 : 26,978.13 = 10,590.21 : x
  2. Step 2: Convert to fraction form
    18,007.92/26,978.13 = 10,590.21/x
  3. Step 3: Cross multiply
    18,007.92x = 26,978.13 × 10,590.21
  4. Step 4: Simplify right side
    18,007.92x = 285,704,062.11
  5. Step 5: Solve for x
    x = 285,704,062.11/18,007.92
  6. Step 6: Final answer
    x = 15,865.47

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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.