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Finding the Fourth Proportional to 18,712.98, 28,065.96 and 8,041.23

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Solution

The fourth proportional to 18,712.98, 28,065.96 and 8,041.23 is: 12,060.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.98 : 28,065.96 = 8,041.23 : x
  2. Step 2: Convert to fraction form
    18,712.98/28,065.96 = 8,041.23/x
  3. Step 3: Cross multiply
    18,712.98x = 28,065.96 × 8,041.23
  4. Step 4: Simplify right side
    18,712.98x = 225,684,839.53
  5. Step 5: Solve for x
    x = 225,684,839.53/18,712.98
  6. Step 6: Final answer
    x = 12,060.34

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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.