Home / 27,807.30-38,374.02-15,231.78

Finding the Fourth Proportional to 27,807.30, 38,374.02 and 15,231.78

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Solution

The fourth proportional to 27,807.30, 38,374.02 and 15,231.78 is: 21,019.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,807.30 : 38,374.02 = 15,231.78 : x
  2. Step 2: Convert to fraction form
    27,807.30/38,374.02 = 15,231.78/x
  3. Step 3: Cross multiply
    27,807.30x = 38,374.02 × 15,231.78
  4. Step 4: Simplify right side
    27,807.30x = 584,504,630.36
  5. Step 5: Solve for x
    x = 584,504,630.36/27,807.30
  6. Step 6: Final answer
    x = 21,019.83

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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.