Home / 21,190.52-31,788.75-6,397.76

Finding the Fourth Proportional to 21,190.52, 31,788.75 and 6,397.76

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Solution

The fourth proportional to 21,190.52, 31,788.75 and 6,397.76 is: 9,597.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.52 : 31,788.75 = 6,397.76 : x
  2. Step 2: Convert to fraction form
    21,190.52/31,788.75 = 6,397.76/x
  3. Step 3: Cross multiply
    21,190.52x = 31,788.75 × 6,397.76
  4. Step 4: Simplify right side
    21,190.52x = 203,376,793.20
  5. Step 5: Solve for x
    x = 203,376,793.20/21,190.52
  6. Step 6: Final answer
    x = 9,597.54

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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.