Home / 28,246.20-38,979.81-15,670.95

Finding the Fourth Proportional to 28,246.20, 38,979.81 and 15,670.95

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Solution

The fourth proportional to 28,246.20, 38,979.81 and 15,670.95 is: 21,625.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,246.20 : 38,979.81 = 15,670.95 : x
  2. Step 2: Convert to fraction form
    28,246.20/38,979.81 = 15,670.95/x
  3. Step 3: Cross multiply
    28,246.20x = 38,979.81 × 15,670.95
  4. Step 4: Simplify right side
    28,246.20x = 610,850,653.52
  5. Step 5: Solve for x
    x = 610,850,653.52/28,246.20
  6. Step 6: Final answer
    x = 21,625.94

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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.