Home / 21,825.86-32,711.40-9,331.20

Finding the Fourth Proportional to 21,825.86, 32,711.40 and 9,331.20

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Solution

The fourth proportional to 21,825.86, 32,711.40 and 9,331.20 is: 13,985.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,825.86 : 32,711.40 = 9,331.20 : x
  2. Step 2: Convert to fraction form
    21,825.86/32,711.40 = 9,331.20/x
  3. Step 3: Cross multiply
    21,825.86x = 32,711.40 × 9,331.20
  4. Step 4: Simplify right side
    21,825.86x = 305,236,615.68
  5. Step 5: Solve for x
    x = 305,236,615.68/21,825.86
  6. Step 6: Final answer
    x = 13,985.09

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1.5x scale

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.