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Finding the Fourth Proportional to 25,148.40, 37,721.40 and 8,506.80

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Solution

The fourth proportional to 25,148.40, 37,721.40 and 8,506.80 is: 12,759.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,148.40 : 37,721.40 = 8,506.80 : x
  2. Step 2: Convert to fraction form
    25,148.40/37,721.40 = 8,506.80/x
  3. Step 3: Cross multiply
    25,148.40x = 37,721.40 × 8,506.80
  4. Step 4: Simplify right side
    25,148.40x = 320,888,405.52
  5. Step 5: Solve for x
    x = 320,888,405.52/25,148.40
  6. Step 6: Final answer
    x = 12,759.79

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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.