Home / 38,942.70-58,419.69-12,279.64

Finding the Fourth Proportional to 38,942.70, 58,419.69 and 12,279.64

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Solution

The fourth proportional to 38,942.70, 58,419.69 and 12,279.64 is: 18,421.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,942.70 : 58,419.69 = 12,279.64 : x
  2. Step 2: Convert to fraction form
    38,942.70/58,419.69 = 12,279.64/x
  3. Step 3: Cross multiply
    38,942.70x = 58,419.69 × 12,279.64
  4. Step 4: Simplify right side
    38,942.70x = 717,372,700.71
  5. Step 5: Solve for x
    x = 717,372,700.71/38,942.70
  6. Step 6: Final answer
    x = 18,421.24

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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.