Home / 21,335.29-31,989.24-8,863.93

Finding the Fourth Proportional to 21,335.29, 31,989.24 and 8,863.93

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Solution

The fourth proportional to 21,335.29, 31,989.24 and 8,863.93 is: 13,290.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.29 : 31,989.24 = 8,863.93 : x
  2. Step 2: Convert to fraction form
    21,335.29/31,989.24 = 8,863.93/x
  3. Step 3: Cross multiply
    21,335.29x = 31,989.24 × 8,863.93
  4. Step 4: Simplify right side
    21,335.29x = 283,550,384.11
  5. Step 5: Solve for x
    x = 283,550,384.11/21,335.29
  6. Step 6: Final answer
    x = 13,290.21

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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.