Home / 28,543.41-39,389.09-15,797.12

Finding the Fourth Proportional to 28,543.41, 39,389.09 and 15,797.12

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Solution

The fourth proportional to 28,543.41, 39,389.09 and 15,797.12 is: 21,799.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.41 : 39,389.09 = 15,797.12 : x
  2. Step 2: Convert to fraction form
    28,543.41/39,389.09 = 15,797.12/x
  3. Step 3: Cross multiply
    28,543.41x = 39,389.09 × 15,797.12
  4. Step 4: Simplify right side
    28,543.41x = 622,233,905.49
  5. Step 5: Solve for x
    x = 622,233,905.49/28,543.41
  6. Step 6: Final answer
    x = 21,799.56

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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.