Home / 21,335.13-31,988.96-8,863.76

Finding the Fourth Proportional to 21,335.13, 31,988.96 and 8,863.76

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Solution

The fourth proportional to 21,335.13, 31,988.96 and 8,863.76 is: 13,289.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.13 : 31,988.96 = 8,863.76 : x
  2. Step 2: Convert to fraction form
    21,335.13/31,988.96 = 8,863.76/x
  3. Step 3: Cross multiply
    21,335.13x = 31,988.96 × 8,863.76
  4. Step 4: Simplify right side
    21,335.13x = 283,542,419.77
  5. Step 5: Solve for x
    x = 283,542,419.77/21,335.13
  6. Step 6: Final answer
    x = 13,289.93

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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.