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Finding the Fourth Proportional to 25,245.45, 37,868.18 and 7,720.65

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Solution

The fourth proportional to 25,245.45, 37,868.18 and 7,720.65 is: 11,580.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,245.45 : 37,868.18 = 7,720.65 : x
  2. Step 2: Convert to fraction form
    25,245.45/37,868.18 = 7,720.65/x
  3. Step 3: Cross multiply
    25,245.45x = 37,868.18 × 7,720.65
  4. Step 4: Simplify right side
    25,245.45x = 292,366,925.31
  5. Step 5: Solve for x
    x = 292,366,925.31/25,245.45
  6. Step 6: Final answer
    x = 11,580.98

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Similar ratio
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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.