Home / 28,426.25-39,229.44-15,851

Finding the Fourth Proportional to 28,426.25, 39,229.44 and 15,851

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Solution

The fourth proportional to 28,426.25, 39,229.44 and 15,851 is: 21,875.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426.25 : 39,229.44 = 15,851 : x
  2. Step 2: Convert to fraction form
    28,426.25/39,229.44 = 15,851/x
  3. Step 3: Cross multiply
    28,426.25x = 39,229.44 × 15,851
  4. Step 4: Simplify right side
    28,426.25x = 621,825,853.44
  5. Step 5: Solve for x
    x = 621,825,853.44/28,426.25
  6. Step 6: Final answer
    x = 21,875.06

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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.