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Finding the Fourth Proportional to 43,508.40, 65,267.40 and 13,921.20

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Solution

The fourth proportional to 43,508.40, 65,267.40 and 13,921.20 is: 20,883.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,508.40 : 65,267.40 = 13,921.20 : x
  2. Step 2: Convert to fraction form
    43,508.40/65,267.40 = 13,921.20/x
  3. Step 3: Cross multiply
    43,508.40x = 65,267.40 × 13,921.20
  4. Step 4: Simplify right side
    43,508.40x = 908,600,528.88
  5. Step 5: Solve for x
    x = 908,600,528.88/43,508.40
  6. Step 6: Final answer
    x = 20,883.34

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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.