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Finding the Fourth Proportional to 12,664.51, 17,470.02 and 8,886.13

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Solution

The fourth proportional to 12,664.51, 17,470.02 and 8,886.13 is: 12,257.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.51 : 17,470.02 = 8,886.13 : x
  2. Step 2: Convert to fraction form
    12,664.51/17,470.02 = 8,886.13/x
  3. Step 3: Cross multiply
    12,664.51x = 17,470.02 × 8,886.13
  4. Step 4: Simplify right side
    12,664.51x = 155,240,868.82
  5. Step 5: Solve for x
    x = 155,240,868.82/12,664.51
  6. Step 6: Final answer
    x = 12,257.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.