Home / 21,103.20-31,596.48-10,663.92

Finding the Fourth Proportional to 21,103.20, 31,596.48 and 10,663.92

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Solution

The fourth proportional to 21,103.20, 31,596.48 and 10,663.92 is: 15,966.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.20 : 31,596.48 = 10,663.92 : x
  2. Step 2: Convert to fraction form
    21,103.20/31,596.48 = 10,663.92/x
  3. Step 3: Cross multiply
    21,103.20x = 31,596.48 × 10,663.92
  4. Step 4: Simplify right side
    21,103.20x = 336,942,335.00
  5. Step 5: Solve for x
    x = 336,942,335.00/21,103.20
  6. Step 6: Final answer
    x = 15,966.41

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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.