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Finding the Fourth Proportional to 22,913.20, 34,312.20 and 18,305.20

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Solution

The fourth proportional to 22,913.20, 34,312.20 and 18,305.20 is: 27,411.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,913.20 : 34,312.20 = 18,305.20 : x
  2. Step 2: Convert to fraction form
    22,913.20/34,312.20 = 18,305.20/x
  3. Step 3: Cross multiply
    22,913.20x = 34,312.20 × 18,305.20
  4. Step 4: Simplify right side
    22,913.20x = 628,091,683.44
  5. Step 5: Solve for x
    x = 628,091,683.44/22,913.20
  6. Step 6: Final answer
    x = 27,411.78

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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.