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Finding the Fourth Proportional to 18,038.80, 27,058.38 and 4,891.42

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Solution

The fourth proportional to 18,038.80, 27,058.38 and 4,891.42 is: 7,337.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,038.80 : 27,058.38 = 4,891.42 : x
  2. Step 2: Convert to fraction form
    18,038.80/27,058.38 = 4,891.42/x
  3. Step 3: Cross multiply
    18,038.80x = 27,058.38 × 4,891.42
  4. Step 4: Simplify right side
    18,038.80x = 132,353,901.10
  5. Step 5: Solve for x
    x = 132,353,901.10/18,038.80
  6. Step 6: Final answer
    x = 7,337.18

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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.