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Finding the Fourth Proportional to 25,311.76, 37,975.76 and 12,165.08

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Solution

The fourth proportional to 25,311.76, 37,975.76 and 12,165.08 is: 18,251.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,311.76 : 37,975.76 = 12,165.08 : x
  2. Step 2: Convert to fraction form
    25,311.76/37,975.76 = 12,165.08/x
  3. Step 3: Cross multiply
    25,311.76x = 37,975.76 × 12,165.08
  4. Step 4: Simplify right side
    25,311.76x = 461,978,158.46
  5. Step 5: Solve for x
    x = 461,978,158.46/25,311.76
  6. Step 6: Final answer
    x = 18,251.52

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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.