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Finding the Fourth Proportional to 14,706.54, 20,315.68 and 13,377.90

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Solution

The fourth proportional to 14,706.54, 20,315.68 and 13,377.90 is: 18,480.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,706.54 : 20,315.68 = 13,377.90 : x
  2. Step 2: Convert to fraction form
    14,706.54/20,315.68 = 13,377.90/x
  3. Step 3: Cross multiply
    14,706.54x = 20,315.68 × 13,377.90
  4. Step 4: Simplify right side
    14,706.54x = 271,781,135.47
  5. Step 5: Solve for x
    x = 271,781,135.47/14,706.54
  6. Step 6: Final answer
    x = 18,480.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.