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Finding the Fourth Proportional to 18,139.98, 27,204.80 and 7,044.30

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Solution

The fourth proportional to 18,139.98, 27,204.80 and 7,044.30 is: 10,564.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.98 : 27,204.80 = 7,044.30 : x
  2. Step 2: Convert to fraction form
    18,139.98/27,204.80 = 7,044.30/x
  3. Step 3: Cross multiply
    18,139.98x = 27,204.80 × 7,044.30
  4. Step 4: Simplify right side
    18,139.98x = 191,638,737.42
  5. Step 5: Solve for x
    x = 191,638,737.42/18,139.98
  6. Step 6: Final answer
    x = 10,564.44

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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.