Home / 28,539.99-39,385.22-15,793.70

Finding the Fourth Proportional to 28,539.99, 39,385.22 and 15,793.70

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Solution

The fourth proportional to 28,539.99, 39,385.22 and 15,793.70 is: 21,795.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.99 : 39,385.22 = 15,793.70 : x
  2. Step 2: Convert to fraction form
    28,539.99/39,385.22 = 15,793.70/x
  3. Step 3: Cross multiply
    28,539.99x = 39,385.22 × 15,793.70
  4. Step 4: Simplify right side
    28,539.99x = 622,038,073.22
  5. Step 5: Solve for x
    x = 622,038,073.22/28,539.99
  6. Step 6: Final answer
    x = 21,795.32

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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.