Home / 28,370.72-39,151.74-15,795.46

Finding the Fourth Proportional to 28,370.72, 39,151.74 and 15,795.46

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Solution

The fourth proportional to 28,370.72, 39,151.74 and 15,795.46 is: 21,797.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.72 : 39,151.74 = 15,795.46 : x
  2. Step 2: Convert to fraction form
    28,370.72/39,151.74 = 15,795.46/x
  3. Step 3: Cross multiply
    28,370.72x = 39,151.74 × 15,795.46
  4. Step 4: Simplify right side
    28,370.72x = 618,419,743.10
  5. Step 5: Solve for x
    x = 618,419,743.10/28,370.72
  6. Step 6: Final answer
    x = 21,797.82

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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.