Home / 21,369.16-32,065.20-8,897.78

Finding the Fourth Proportional to 21,369.16, 32,065.20 and 8,897.78

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Solution

The fourth proportional to 21,369.16, 32,065.20 and 8,897.78 is: 13,351.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369.16 : 32,065.20 = 8,897.78 : x
  2. Step 2: Convert to fraction form
    21,369.16/32,065.20 = 8,897.78/x
  3. Step 3: Cross multiply
    21,369.16x = 32,065.20 × 8,897.78
  4. Step 4: Simplify right side
    21,369.16x = 285,309,095.26
  5. Step 5: Solve for x
    x = 285,309,095.26/21,369.16
  6. Step 6: Final answer
    x = 13,351.44

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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.