Home / 25,378.47-38,072.57-7,845.21

Finding the Fourth Proportional to 25,378.47, 38,072.57 and 7,845.21

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Solution

The fourth proportional to 25,378.47, 38,072.57 and 7,845.21 is: 11,769.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,378.47 : 38,072.57 = 7,845.21 : x
  2. Step 2: Convert to fraction form
    25,378.47/38,072.57 = 7,845.21/x
  3. Step 3: Cross multiply
    25,378.47x = 38,072.57 × 7,845.21
  4. Step 4: Simplify right side
    25,378.47x = 298,687,267.66
  5. Step 5: Solve for x
    x = 298,687,267.66/25,378.47
  6. Step 6: Final answer
    x = 11,769.32

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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.