Home / 15,493.01-21,380.27-8,419.46

Finding the Fourth Proportional to 15,493.01, 21,380.27 and 8,419.46

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Solution

The fourth proportional to 15,493.01, 21,380.27 and 8,419.46 is: 11,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,493.01 : 21,380.27 = 8,419.46 : x
  2. Step 2: Convert to fraction form
    15,493.01/21,380.27 = 8,419.46/x
  3. Step 3: Cross multiply
    15,493.01x = 21,380.27 × 8,419.46
  4. Step 4: Simplify right side
    15,493.01x = 180,010,179.06
  5. Step 5: Solve for x
    x = 180,010,179.06/15,493.01
  6. Step 6: Final answer
    x = 11,618.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.