Home / 27,853.73-38,438.30-15,917.50

Finding the Fourth Proportional to 27,853.73, 38,438.30 and 15,917.50

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Solution

The fourth proportional to 27,853.73, 38,438.30 and 15,917.50 is: 21,966.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,853.73 : 38,438.30 = 15,917.50 : x
  2. Step 2: Convert to fraction form
    27,853.73/38,438.30 = 15,917.50/x
  3. Step 3: Cross multiply
    27,853.73x = 38,438.30 × 15,917.50
  4. Step 4: Simplify right side
    27,853.73x = 611,841,583.95
  5. Step 5: Solve for x
    x = 611,841,583.95/27,853.73
  6. Step 6: Final answer
    x = 21,966.24

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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.