Home / 11,729.40-17,602.20-8,445.30

Finding the Fourth Proportional to 11,729.40, 17,602.20 and 8,445.30

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Solution

The fourth proportional to 11,729.40, 17,602.20 and 8,445.30 is: 12,673.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.40 : 17,602.20 = 8,445.30 : x
  2. Step 2: Convert to fraction form
    11,729.40/17,602.20 = 8,445.30/x
  3. Step 3: Cross multiply
    11,729.40x = 17,602.20 × 8,445.30
  4. Step 4: Simplify right side
    11,729.40x = 148,655,859.66
  5. Step 5: Solve for x
    x = 148,655,859.66/11,729.40
  6. Step 6: Final answer
    x = 12,673.78

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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.