Home / 21,456.28-32,173.44-8,972.89

Finding the Fourth Proportional to 21,456.28, 32,173.44 and 8,972.89

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Solution

The fourth proportional to 21,456.28, 32,173.44 and 8,972.89 is: 13,454.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,456.28 : 32,173.44 = 8,972.89 : x
  2. Step 2: Convert to fraction form
    21,456.28/32,173.44 = 8,972.89/x
  3. Step 3: Cross multiply
    21,456.28x = 32,173.44 × 8,972.89
  4. Step 4: Simplify right side
    21,456.28x = 288,688,738.04
  5. Step 5: Solve for x
    x = 288,688,738.04/21,456.28
  6. Step 6: Final answer
    x = 13,454.74

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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.