Home / 27,878.28-38,471.61-15,303.03

Finding the Fourth Proportional to 27,878.28, 38,471.61 and 15,303.03

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Solution

The fourth proportional to 27,878.28, 38,471.61 and 15,303.03 is: 21,117.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.28 : 38,471.61 = 15,303.03 : x
  2. Step 2: Convert to fraction form
    27,878.28/38,471.61 = 15,303.03/x
  3. Step 3: Cross multiply
    27,878.28x = 38,471.61 × 15,303.03
  4. Step 4: Simplify right side
    27,878.28x = 588,732,201.98
  5. Step 5: Solve for x
    x = 588,732,201.98/27,878.28
  6. Step 6: Final answer
    x = 21,117.95

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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.