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Finding the Fourth Proportional to 18,437.80, 27,651.30 and 8,574.70

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Solution

The fourth proportional to 18,437.80, 27,651.30 and 8,574.70 is: 12,859.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,437.80 : 27,651.30 = 8,574.70 : x
  2. Step 2: Convert to fraction form
    18,437.80/27,651.30 = 8,574.70/x
  3. Step 3: Cross multiply
    18,437.80x = 27,651.30 × 8,574.70
  4. Step 4: Simplify right side
    18,437.80x = 237,101,602.11
  5. Step 5: Solve for x
    x = 237,101,602.11/18,437.80
  6. Step 6: Final answer
    x = 12,859.54

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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.