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Finding the Fourth Proportional to 12,648.58, 18,963.12 and 4,750.92

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Solution

The fourth proportional to 12,648.58, 18,963.12 and 4,750.92 is: 7,122.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,648.58 : 18,963.12 = 4,750.92 : x
  2. Step 2: Convert to fraction form
    12,648.58/18,963.12 = 4,750.92/x
  3. Step 3: Cross multiply
    12,648.58x = 18,963.12 × 4,750.92
  4. Step 4: Simplify right side
    12,648.58x = 90,092,266.07
  5. Step 5: Solve for x
    x = 90,092,266.07/12,648.58
  6. Step 6: Final answer
    x = 7,122.72

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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.