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Finding the Fourth Proportional to 18,346.80, 27,520.20 and 10,947.45

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Solution

The fourth proportional to 18,346.80, 27,520.20 and 10,947.45 is: 16,421.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,346.80 : 27,520.20 = 10,947.45 : x
  2. Step 2: Convert to fraction form
    18,346.80/27,520.20 = 10,947.45/x
  3. Step 3: Cross multiply
    18,346.80x = 27,520.20 × 10,947.45
  4. Step 4: Simplify right side
    18,346.80x = 301,276,013.49
  5. Step 5: Solve for x
    x = 301,276,013.49/18,346.80
  6. Step 6: Final answer
    x = 16,421.18

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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.