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Finding the Fourth Proportional to 29,286.80, 43,930.20 and 21,510.80

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Solution

The fourth proportional to 29,286.80, 43,930.20 and 21,510.80 is: 32,266.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,286.80 : 43,930.20 = 21,510.80 : x
  2. Step 2: Convert to fraction form
    29,286.80/43,930.20 = 21,510.80/x
  3. Step 3: Cross multiply
    29,286.80x = 43,930.20 × 21,510.80
  4. Step 4: Simplify right side
    29,286.80x = 944,973,746.16
  5. Step 5: Solve for x
    x = 944,973,746.16/29,286.80
  6. Step 6: Final answer
    x = 32,266.20

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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.