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Finding the Fourth Proportional to 18,632.91, 27,925.50 and 9,147.39

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Solution

The fourth proportional to 18,632.91, 27,925.50 and 9,147.39 is: 13,709.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,632.91 : 27,925.50 = 9,147.39 : x
  2. Step 2: Convert to fraction form
    18,632.91/27,925.50 = 9,147.39/x
  3. Step 3: Cross multiply
    18,632.91x = 27,925.50 × 9,147.39
  4. Step 4: Simplify right side
    18,632.91x = 255,445,439.45
  5. Step 5: Solve for x
    x = 255,445,439.45/18,632.91
  6. Step 6: Final answer
    x = 13,709.37

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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.