Home / 21,532.72-32,241.14-12,158.68

Finding the Fourth Proportional to 21,532.72, 32,241.14 and 12,158.68

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Solution

The fourth proportional to 21,532.72, 32,241.14 and 12,158.68 is: 18,205.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,532.72 : 32,241.14 = 12,158.68 : x
  2. Step 2: Convert to fraction form
    21,532.72/32,241.14 = 12,158.68/x
  3. Step 3: Cross multiply
    21,532.72x = 32,241.14 × 12,158.68
  4. Step 4: Simplify right side
    21,532.72x = 392,009,704.10
  5. Step 5: Solve for x
    x = 392,009,704.10/21,532.72
  6. Step 6: Final answer
    x = 18,205.30

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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.