Home / 13,742.97-20,616.90-4,385.04

Finding the Fourth Proportional to 13,742.97, 20,616.90 and 4,385.04

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Solution

The fourth proportional to 13,742.97, 20,616.90 and 4,385.04 is: 6,578.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.97 : 20,616.90 = 4,385.04 : x
  2. Step 2: Convert to fraction form
    13,742.97/20,616.90 = 4,385.04/x
  3. Step 3: Cross multiply
    13,742.97x = 20,616.90 × 4,385.04
  4. Step 4: Simplify right side
    13,742.97x = 90,405,931.18
  5. Step 5: Solve for x
    x = 90,405,931.18/13,742.97
  6. Step 6: Final answer
    x = 6,578.34

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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.