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Finding the Fourth Proportional to 29,218.80, 43,828.20 and 8,158.80

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Solution

The fourth proportional to 29,218.80, 43,828.20 and 8,158.80 is: 12,238.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,218.80 : 43,828.20 = 8,158.80 : x
  2. Step 2: Convert to fraction form
    29,218.80/43,828.20 = 8,158.80/x
  3. Step 3: Cross multiply
    29,218.80x = 43,828.20 × 8,158.80
  4. Step 4: Simplify right side
    29,218.80x = 357,585,518.16
  5. Step 5: Solve for x
    x = 357,585,518.16/29,218.80
  6. Step 6: Final answer
    x = 12,238.20

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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.