Home / 28,216.96-38,939.85-15,471.31

Finding the Fourth Proportional to 28,216.96, 38,939.85 and 15,471.31

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Solution

The fourth proportional to 28,216.96, 38,939.85 and 15,471.31 is: 21,350.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.96 : 38,939.85 = 15,471.31 : x
  2. Step 2: Convert to fraction form
    28,216.96/38,939.85 = 15,471.31/x
  3. Step 3: Cross multiply
    28,216.96x = 38,939.85 × 15,471.31
  4. Step 4: Simplify right side
    28,216.96x = 602,450,335.34
  5. Step 5: Solve for x
    x = 602,450,335.34/28,216.96
  6. Step 6: Final answer
    x = 21,350.65

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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.