Home / 21,890.16-32,844.24-7,851.96

Finding the Fourth Proportional to 21,890.16, 32,844.24 and 7,851.96

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Solution

The fourth proportional to 21,890.16, 32,844.24 and 7,851.96 is: 11,781.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,890.16 : 32,844.24 = 7,851.96 : x
  2. Step 2: Convert to fraction form
    21,890.16/32,844.24 = 7,851.96/x
  3. Step 3: Cross multiply
    21,890.16x = 32,844.24 × 7,851.96
  4. Step 4: Simplify right side
    21,890.16x = 257,891,658.71
  5. Step 5: Solve for x
    x = 257,891,658.71/21,890.16
  6. Step 6: Final answer
    x = 11,781.17

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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.