Home / 13,742.25-20,612.34-4,381.89

Finding the Fourth Proportional to 13,742.25, 20,612.34 and 4,381.89

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Solution

The fourth proportional to 13,742.25, 20,612.34 and 4,381.89 is: 6,572.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.25 : 20,612.34 = 4,381.89 : x
  2. Step 2: Convert to fraction form
    13,742.25/20,612.34 = 4,381.89/x
  3. Step 3: Cross multiply
    13,742.25x = 20,612.34 × 4,381.89
  4. Step 4: Simplify right side
    13,742.25x = 90,321,006.52
  5. Step 5: Solve for x
    x = 90,321,006.52/13,742.25
  6. Step 6: Final answer
    x = 6,572.50

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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.