Home / 21,302.24-31,957.16-8,815.49

Finding the Fourth Proportional to 21,302.24, 31,957.16 and 8,815.49

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Solution

The fourth proportional to 21,302.24, 31,957.16 and 8,815.49 is: 13,224.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.24 : 31,957.16 = 8,815.49 : x
  2. Step 2: Convert to fraction form
    21,302.24/31,957.16 = 8,815.49/x
  3. Step 3: Cross multiply
    21,302.24x = 31,957.16 × 8,815.49
  4. Step 4: Simplify right side
    21,302.24x = 281,717,820.55
  5. Step 5: Solve for x
    x = 281,717,820.55/21,302.24
  6. Step 6: Final answer
    x = 13,224.80

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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.