Home / 28,720.26-39,632.70-15,973.38

Finding the Fourth Proportional to 28,720.26, 39,632.70 and 15,973.38

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Solution

The fourth proportional to 28,720.26, 39,632.70 and 15,973.38 is: 22,042.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.26 : 39,632.70 = 15,973.38 : x
  2. Step 2: Convert to fraction form
    28,720.26/39,632.70 = 15,973.38/x
  3. Step 3: Cross multiply
    28,720.26x = 39,632.70 × 15,973.38
  4. Step 4: Simplify right side
    28,720.26x = 633,068,177.53
  5. Step 5: Solve for x
    x = 633,068,177.53/28,720.26
  6. Step 6: Final answer
    x = 22,042.56

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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.