Home / 23,018.25-31,766.78-12,947.65

Finding the Fourth Proportional to 23,018.25, 31,766.78 and 12,947.65

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Solution

The fourth proportional to 23,018.25, 31,766.78 and 12,947.65 is: 17,868.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,018.25 : 31,766.78 = 12,947.65 : x
  2. Step 2: Convert to fraction form
    23,018.25/31,766.78 = 12,947.65/x
  3. Step 3: Cross multiply
    23,018.25x = 31,766.78 × 12,947.65
  4. Step 4: Simplify right side
    23,018.25x = 411,305,102.02
  5. Step 5: Solve for x
    x = 411,305,102.02/23,018.25
  6. Step 6: Final answer
    x = 17,868.65

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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.