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Finding the Fourth Proportional to 12,695.31, 19,072.16 and 8,955.69

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Solution

The fourth proportional to 12,695.31, 19,072.16 and 8,955.69 is: 13,454.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,695.31 : 19,072.16 = 8,955.69 : x
  2. Step 2: Convert to fraction form
    12,695.31/19,072.16 = 8,955.69/x
  3. Step 3: Cross multiply
    12,695.31x = 19,072.16 × 8,955.69
  4. Step 4: Simplify right side
    12,695.31x = 170,804,392.78
  5. Step 5: Solve for x
    x = 170,804,392.78/12,695.31
  6. Step 6: Final answer
    x = 13,454.14

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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.