Home / 28,542.72-39,390.48-15,965.28

Finding the Fourth Proportional to 28,542.72, 39,390.48 and 15,965.28

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Solution

The fourth proportional to 28,542.72, 39,390.48 and 15,965.28 is: 22,032.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,542.72 : 39,390.48 = 15,965.28 : x
  2. Step 2: Convert to fraction form
    28,542.72/39,390.48 = 15,965.28/x
  3. Step 3: Cross multiply
    28,542.72x = 39,390.48 × 15,965.28
  4. Step 4: Simplify right side
    28,542.72x = 628,880,042.53
  5. Step 5: Solve for x
    x = 628,880,042.53/28,542.72
  6. Step 6: Final answer
    x = 22,032.94

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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.