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Finding the Fourth Proportional to 18,894.80, 28,342.20 and 16,302.80

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Solution

The fourth proportional to 18,894.80, 28,342.20 and 16,302.80 is: 24,454.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,894.80 : 28,342.20 = 16,302.80 : x
  2. Step 2: Convert to fraction form
    18,894.80/28,342.20 = 16,302.80/x
  3. Step 3: Cross multiply
    18,894.80x = 28,342.20 × 16,302.80
  4. Step 4: Simplify right side
    18,894.80x = 462,057,218.16
  5. Step 5: Solve for x
    x = 462,057,218.16/18,894.80
  6. Step 6: Final answer
    x = 24,454.20

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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.