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Finding the Fourth Proportional to 15,278.63, 22,917.63 and 5,415.56

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Solution

The fourth proportional to 15,278.63, 22,917.63 and 5,415.56 is: 8,123.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278.63 : 22,917.63 = 5,415.56 : x
  2. Step 2: Convert to fraction form
    15,278.63/22,917.63 = 5,415.56/x
  3. Step 3: Cross multiply
    15,278.63x = 22,917.63 × 5,415.56
  4. Step 4: Simplify right side
    15,278.63x = 124,111,791.98
  5. Step 5: Solve for x
    x = 124,111,791.98/15,278.63
  6. Step 6: Final answer
    x = 8,123.23

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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.