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Finding the Fourth Proportional to 22,708.78, 34,075.01 and 12,867.28

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Solution

The fourth proportional to 22,708.78, 34,075.01 and 12,867.28 is: 19,307.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,708.78 : 34,075.01 = 12,867.28 : x
  2. Step 2: Convert to fraction form
    22,708.78/34,075.01 = 12,867.28/x
  3. Step 3: Cross multiply
    22,708.78x = 34,075.01 × 12,867.28
  4. Step 4: Simplify right side
    22,708.78x = 438,452,641.65
  5. Step 5: Solve for x
    x = 438,452,641.65/22,708.78
  6. Step 6: Final answer
    x = 19,307.63

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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.