Home / 25,412.40-38,120.04-7,884.72

Finding the Fourth Proportional to 25,412.40, 38,120.04 and 7,884.72

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Solution

The fourth proportional to 25,412.40, 38,120.04 and 7,884.72 is: 11,827.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,412.40 : 38,120.04 = 7,884.72 : x
  2. Step 2: Convert to fraction form
    25,412.40/38,120.04 = 7,884.72/x
  3. Step 3: Cross multiply
    25,412.40x = 38,120.04 × 7,884.72
  4. Step 4: Simplify right side
    25,412.40x = 300,565,841.79
  5. Step 5: Solve for x
    x = 300,565,841.79/25,412.40
  6. Step 6: Final answer
    x = 11,827.53

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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.