Home / 21,565.67-29,756.10-12,611.42

Finding the Fourth Proportional to 21,565.67, 29,756.10 and 12,611.42

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Solution

The fourth proportional to 21,565.67, 29,756.10 and 12,611.42 is: 17,401.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,565.67 : 29,756.10 = 12,611.42 : x
  2. Step 2: Convert to fraction form
    21,565.67/29,756.10 = 12,611.42/x
  3. Step 3: Cross multiply
    21,565.67x = 29,756.10 × 12,611.42
  4. Step 4: Simplify right side
    21,565.67x = 375,266,525.88
  5. Step 5: Solve for x
    x = 375,266,525.88/21,565.67
  6. Step 6: Final answer
    x = 17,401.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.