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Finding the Fourth Proportional to 12,899.66, 17,801.73 and 7,521.95

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Solution

The fourth proportional to 12,899.66, 17,801.73 and 7,521.95 is: 10,380.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.66 : 17,801.73 = 7,521.95 : x
  2. Step 2: Convert to fraction form
    12,899.66/17,801.73 = 7,521.95/x
  3. Step 3: Cross multiply
    12,899.66x = 17,801.73 × 7,521.95
  4. Step 4: Simplify right side
    12,899.66x = 133,903,722.97
  5. Step 5: Solve for x
    x = 133,903,722.97/12,899.66
  6. Step 6: Final answer
    x = 10,380.41

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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.