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Finding the Fourth Proportional to 25,161.78, 37,742.76 and 7,631.76

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Solution

The fourth proportional to 25,161.78, 37,742.76 and 7,631.76 is: 11,447.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,161.78 : 37,742.76 = 7,631.76 : x
  2. Step 2: Convert to fraction form
    25,161.78/37,742.76 = 7,631.76/x
  3. Step 3: Cross multiply
    25,161.78x = 37,742.76 × 7,631.76
  4. Step 4: Simplify right side
    25,161.78x = 288,043,686.06
  5. Step 5: Solve for x
    x = 288,043,686.06/25,161.78
  6. Step 6: Final answer
    x = 11,447.67

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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.