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Finding the Fourth Proportional to 18,872.40, 28,297.80 and 16,740.48

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Solution

The fourth proportional to 18,872.40, 28,297.80 and 16,740.48 is: 25,101.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.40 : 28,297.80 = 16,740.48 : x
  2. Step 2: Convert to fraction form
    18,872.40/28,297.80 = 16,740.48/x
  3. Step 3: Cross multiply
    18,872.40x = 28,297.80 × 16,740.48
  4. Step 4: Simplify right side
    18,872.40x = 473,718,754.94
  5. Step 5: Solve for x
    x = 473,718,754.94/18,872.40
  6. Step 6: Final answer
    x = 25,101.14

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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.