Home / 23,021.65-31,760.88-12,947.78

Finding the Fourth Proportional to 23,021.65, 31,760.88 and 12,947.78

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Solution

The fourth proportional to 23,021.65, 31,760.88 and 12,947.78 is: 17,862.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,021.65 : 31,760.88 = 12,947.78 : x
  2. Step 2: Convert to fraction form
    23,021.65/31,760.88 = 12,947.78/x
  3. Step 3: Cross multiply
    23,021.65x = 31,760.88 × 12,947.78
  4. Step 4: Simplify right side
    23,021.65x = 411,232,917.69
  5. Step 5: Solve for x
    x = 411,232,917.69/23,021.65
  6. Step 6: Final answer
    x = 17,862.88

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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.