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Finding the Fourth Proportional to 20,616.84, 30,930.84 and 14,701.20

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Solution

The fourth proportional to 20,616.84, 30,930.84 and 14,701.20 is: 22,055.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.84 : 30,930.84 = 14,701.20 : x
  2. Step 2: Convert to fraction form
    20,616.84/30,930.84 = 14,701.20/x
  3. Step 3: Cross multiply
    20,616.84x = 30,930.84 × 14,701.20
  4. Step 4: Simplify right side
    20,616.84x = 454,720,465.01
  5. Step 5: Solve for x
    x = 454,720,465.01/20,616.84
  6. Step 6: Final answer
    x = 22,055.78

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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.