Home / 20,887.57-31,330.95-5,092.66

Finding the Fourth Proportional to 20,887.57, 31,330.95 and 5,092.66

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Solution

The fourth proportional to 20,887.57, 31,330.95 and 5,092.66 is: 7,638.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.57 : 31,330.95 = 5,092.66 : x
  2. Step 2: Convert to fraction form
    20,887.57/31,330.95 = 5,092.66/x
  3. Step 3: Cross multiply
    20,887.57x = 31,330.95 × 5,092.66
  4. Step 4: Simplify right side
    20,887.57x = 159,557,875.83
  5. Step 5: Solve for x
    x = 159,557,875.83/20,887.57
  6. Step 6: Final answer
    x = 7,638.89

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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.