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Finding the Fourth Proportional to 29,170.80, 43,705.80 and 13,556.40

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Solution

The fourth proportional to 29,170.80, 43,705.80 and 13,556.40 is: 20,311.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,170.80 : 43,705.80 = 13,556.40 : x
  2. Step 2: Convert to fraction form
    29,170.80/43,705.80 = 13,556.40/x
  3. Step 3: Cross multiply
    29,170.80x = 43,705.80 × 13,556.40
  4. Step 4: Simplify right side
    29,170.80x = 592,493,307.12
  5. Step 5: Solve for x
    x = 592,493,307.12/29,170.80
  6. Step 6: Final answer
    x = 20,311.18

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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.