Home / 21,715.05-32,627.25-13,821.20

Finding the Fourth Proportional to 21,715.05, 32,627.25 and 13,821.20

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Solution

The fourth proportional to 21,715.05, 32,627.25 and 13,821.20 is: 20,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.05 : 32,627.25 = 13,821.20 : x
  2. Step 2: Convert to fraction form
    21,715.05/32,627.25 = 13,821.20/x
  3. Step 3: Cross multiply
    21,715.05x = 32,627.25 × 13,821.20
  4. Step 4: Simplify right side
    21,715.05x = 450,947,747.70
  5. Step 5: Solve for x
    x = 450,947,747.70/21,715.05
  6. Step 6: Final answer
    x = 20,766.60

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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.