Home / 20,887.35-31,330.95-5,092.20

Finding the Fourth Proportional to 20,887.35, 31,330.95 and 5,092.20

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Solution

The fourth proportional to 20,887.35, 31,330.95 and 5,092.20 is: 7,638.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.35 : 31,330.95 = 5,092.20 : x
  2. Step 2: Convert to fraction form
    20,887.35/31,330.95 = 5,092.20/x
  3. Step 3: Cross multiply
    20,887.35x = 31,330.95 × 5,092.20
  4. Step 4: Simplify right side
    20,887.35x = 159,543,463.59
  5. Step 5: Solve for x
    x = 159,543,463.59/20,887.35
  6. Step 6: Final answer
    x = 7,638.28

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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.