Home / 15,493.03-21,380.52-8,419.45

Finding the Fourth Proportional to 15,493.03, 21,380.52 and 8,419.45

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Solution

The fourth proportional to 15,493.03, 21,380.52 and 8,419.45 is: 11,618.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,493.03 : 21,380.52 = 8,419.45 : x
  2. Step 2: Convert to fraction form
    15,493.03/21,380.52 = 8,419.45/x
  3. Step 3: Cross multiply
    15,493.03x = 21,380.52 × 8,419.45
  4. Step 4: Simplify right side
    15,493.03x = 180,012,177.02
  5. Step 5: Solve for x
    x = 180,012,177.02/15,493.03
  6. Step 6: Final answer
    x = 11,618.92

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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.