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Finding the Fourth Proportional to 12,184.79, 18,253.85 and 7,239.39

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Solution

The fourth proportional to 12,184.79, 18,253.85 and 7,239.39 is: 10,845.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,184.79 : 18,253.85 = 7,239.39 : x
  2. Step 2: Convert to fraction form
    12,184.79/18,253.85 = 7,239.39/x
  3. Step 3: Cross multiply
    12,184.79x = 18,253.85 × 7,239.39
  4. Step 4: Simplify right side
    12,184.79x = 132,146,702.95
  5. Step 5: Solve for x
    x = 132,146,702.95/12,184.79
  6. Step 6: Final answer
    x = 10,845.22

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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.