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Finding the Fourth Proportional to 25,920.63, 38,880.67 and 11,876.67

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Solution

The fourth proportional to 25,920.63, 38,880.67 and 11,876.67 is: 17,814.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,920.63 : 38,880.67 = 11,876.67 : x
  2. Step 2: Convert to fraction form
    25,920.63/38,880.67 = 11,876.67/x
  3. Step 3: Cross multiply
    25,920.63x = 38,880.67 × 11,876.67
  4. Step 4: Simplify right side
    25,920.63x = 461,772,886.97
  5. Step 5: Solve for x
    x = 461,772,886.97/25,920.63
  6. Step 6: Final answer
    x = 17,814.88

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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.