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Finding the Fourth Proportional to 25,960.80, 38,938.32 and 7,492.80

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Solution

The fourth proportional to 25,960.80, 38,938.32 and 7,492.80 is: 11,238.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,960.80 : 38,938.32 = 7,492.80 : x
  2. Step 2: Convert to fraction form
    25,960.80/38,938.32 = 7,492.80/x
  3. Step 3: Cross multiply
    25,960.80x = 38,938.32 × 7,492.80
  4. Step 4: Simplify right side
    25,960.80x = 291,757,044.10
  5. Step 5: Solve for x
    x = 291,757,044.10/25,960.80
  6. Step 6: Final answer
    x = 11,238.37

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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.