Home / 21,825.81-32,711.33-9,331.15

Finding the Fourth Proportional to 21,825.81, 32,711.33 and 9,331.15

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Solution

The fourth proportional to 21,825.81, 32,711.33 and 9,331.15 is: 13,985.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,825.81 : 32,711.33 = 9,331.15 : x
  2. Step 2: Convert to fraction form
    21,825.81/32,711.33 = 9,331.15/x
  3. Step 3: Cross multiply
    21,825.81x = 32,711.33 × 9,331.15
  4. Step 4: Simplify right side
    21,825.81x = 305,234,307.99
  5. Step 5: Solve for x
    x = 305,234,307.99/21,825.81
  6. Step 6: Final answer
    x = 13,985.02

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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.