Home / 38,728.08-58,086.63-12,429.42

Finding the Fourth Proportional to 38,728.08, 58,086.63 and 12,429.42

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Solution

The fourth proportional to 38,728.08, 58,086.63 and 12,429.42 is: 18,642.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,728.08 : 58,086.63 = 12,429.42 : x
  2. Step 2: Convert to fraction form
    38,728.08/58,086.63 = 12,429.42/x
  3. Step 3: Cross multiply
    38,728.08x = 58,086.63 × 12,429.42
  4. Step 4: Simplify right side
    38,728.08x = 721,983,120.65
  5. Step 5: Solve for x
    x = 721,983,120.65/38,728.08
  6. Step 6: Final answer
    x = 18,642.37

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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.