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Finding the Fourth Proportional to 15,278.72, 22,883.84 and 13,278.72

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Solution

The fourth proportional to 15,278.72, 22,883.84 and 13,278.72 is: 19,888.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278.72 : 22,883.84 = 13,278.72 : x
  2. Step 2: Convert to fraction form
    15,278.72/22,883.84 = 13,278.72/x
  3. Step 3: Cross multiply
    15,278.72x = 22,883.84 × 13,278.72
  4. Step 4: Simplify right side
    15,278.72x = 303,868,103.88
  5. Step 5: Solve for x
    x = 303,868,103.88/15,278.72
  6. Step 6: Final answer
    x = 19,888.32

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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.