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Finding the Fourth Proportional to 18,307.59, 27,442.92 and 7,209.99

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Solution

The fourth proportional to 18,307.59, 27,442.92 and 7,209.99 is: 10,807.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.59 : 27,442.92 = 7,209.99 : x
  2. Step 2: Convert to fraction form
    18,307.59/27,442.92 = 7,209.99/x
  3. Step 3: Cross multiply
    18,307.59x = 27,442.92 × 7,209.99
  4. Step 4: Simplify right side
    18,307.59x = 197,863,178.77
  5. Step 5: Solve for x
    x = 197,863,178.77/18,307.59
  6. Step 6: Final answer
    x = 10,807.71

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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.