Home / 21,520.85-32,261.81-7,666.61

Finding the Fourth Proportional to 21,520.85, 32,261.81 and 7,666.61

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Solution

The fourth proportional to 21,520.85, 32,261.81 and 7,666.61 is: 11,492.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520.85 : 32,261.81 = 7,666.61 : x
  2. Step 2: Convert to fraction form
    21,520.85/32,261.81 = 7,666.61/x
  3. Step 3: Cross multiply
    21,520.85x = 32,261.81 × 7,666.61
  4. Step 4: Simplify right side
    21,520.85x = 247,338,515.52
  5. Step 5: Solve for x
    x = 247,338,515.52/21,520.85
  6. Step 6: Final answer
    x = 11,492.97

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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.