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Finding the Fourth Proportional to 18,518.88, 27,784.08 and 5,373.12

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Solution

The fourth proportional to 18,518.88, 27,784.08 and 5,373.12 is: 8,061.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.88 : 27,784.08 = 5,373.12 : x
  2. Step 2: Convert to fraction form
    18,518.88/27,784.08 = 5,373.12/x
  3. Step 3: Cross multiply
    18,518.88x = 27,784.08 × 5,373.12
  4. Step 4: Simplify right side
    18,518.88x = 149,287,195.93
  5. Step 5: Solve for x
    x = 149,287,195.93/18,518.88
  6. Step 6: Final answer
    x = 8,061.35

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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.