Home / 28,219.82-38,943.81-15,472.73

Finding the Fourth Proportional to 28,219.82, 38,943.81 and 15,472.73

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Solution

The fourth proportional to 28,219.82, 38,943.81 and 15,472.73 is: 21,352.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.82 : 38,943.81 = 15,472.73 : x
  2. Step 2: Convert to fraction form
    28,219.82/38,943.81 = 15,472.73/x
  3. Step 3: Cross multiply
    28,219.82x = 38,943.81 × 15,472.73
  4. Step 4: Simplify right side
    28,219.82x = 602,566,862.58
  5. Step 5: Solve for x
    x = 602,566,862.58/28,219.82
  6. Step 6: Final answer
    x = 21,352.62

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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.