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Finding the Fourth Proportional to 18,658.95, 27,992.12 and 5,332.06

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Solution

The fourth proportional to 18,658.95, 27,992.12 and 5,332.06 is: 7,999.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.95 : 27,992.12 = 5,332.06 : x
  2. Step 2: Convert to fraction form
    18,658.95/27,992.12 = 5,332.06/x
  3. Step 3: Cross multiply
    18,658.95x = 27,992.12 × 5,332.06
  4. Step 4: Simplify right side
    18,658.95x = 149,255,741.68
  5. Step 5: Solve for x
    x = 149,255,741.68/18,658.95
  6. Step 6: Final answer
    x = 7,999.15

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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.