Home / 20,759.07-28,640.03-15,980.48

Finding the Fourth Proportional to 20,759.07, 28,640.03 and 15,980.48

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Solution

The fourth proportional to 20,759.07, 28,640.03 and 15,980.48 is: 22,047.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.07 : 28,640.03 = 15,980.48 : x
  2. Step 2: Convert to fraction form
    20,759.07/28,640.03 = 15,980.48/x
  3. Step 3: Cross multiply
    20,759.07x = 28,640.03 × 15,980.48
  4. Step 4: Simplify right side
    20,759.07x = 457,681,283.41
  5. Step 5: Solve for x
    x = 457,681,283.41/20,759.07
  6. Step 6: Final answer
    x = 22,047.29

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Similar ratio
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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.