Home / 28,217.21-38,940.19-15,471.56

Finding the Fourth Proportional to 28,217.21, 38,940.19 and 15,471.56

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Solution

The fourth proportional to 28,217.21, 38,940.19 and 15,471.56 is: 21,350.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.21 : 38,940.19 = 15,471.56 : x
  2. Step 2: Convert to fraction form
    28,217.21/38,940.19 = 15,471.56/x
  3. Step 3: Cross multiply
    28,217.21x = 38,940.19 × 15,471.56
  4. Step 4: Simplify right side
    28,217.21x = 602,465,427.32
  5. Step 5: Solve for x
    x = 602,465,427.32/28,217.21
  6. Step 6: Final answer
    x = 21,350.99

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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.