Home / 20,955.90-31,433.85-5,373.53

Finding the Fourth Proportional to 20,955.90, 31,433.85 and 5,373.53

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Solution

The fourth proportional to 20,955.90, 31,433.85 and 5,373.53 is: 8,060.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.90 : 31,433.85 = 5,373.53 : x
  2. Step 2: Convert to fraction form
    20,955.90/31,433.85 = 5,373.53/x
  3. Step 3: Cross multiply
    20,955.90x = 31,433.85 × 5,373.53
  4. Step 4: Simplify right side
    20,955.90x = 168,910,671.39
  5. Step 5: Solve for x
    x = 168,910,671.39/20,955.90
  6. Step 6: Final answer
    x = 8,060.29

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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.