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Finding the Fourth Proportional to 12,954.52, 17,868.90 and 7,649.02

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Solution

The fourth proportional to 12,954.52, 17,868.90 and 7,649.02 is: 10,550.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,954.52 : 17,868.90 = 7,649.02 : x
  2. Step 2: Convert to fraction form
    12,954.52/17,868.90 = 7,649.02/x
  3. Step 3: Cross multiply
    12,954.52x = 17,868.90 × 7,649.02
  4. Step 4: Simplify right side
    12,954.52x = 136,679,573.48
  5. Step 5: Solve for x
    x = 136,679,573.48/12,954.52
  6. Step 6: Final answer
    x = 10,550.72

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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.