Home / 28,520.26-39,355.77-15,943.30

Finding the Fourth Proportional to 28,520.26, 39,355.77 and 15,943.30

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Solution

The fourth proportional to 28,520.26, 39,355.77 and 15,943.30 is: 22,000.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.26 : 39,355.77 = 15,943.30 : x
  2. Step 2: Convert to fraction form
    28,520.26/39,355.77 = 15,943.30/x
  3. Step 3: Cross multiply
    28,520.26x = 39,355.77 × 15,943.30
  4. Step 4: Simplify right side
    28,520.26x = 627,460,847.84
  5. Step 5: Solve for x
    x = 627,460,847.84/28,520.26
  6. Step 6: Final answer
    x = 22,000.53

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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.