Home / 28,657.80-39,550.26-15,913.46

Finding the Fourth Proportional to 28,657.80, 39,550.26 and 15,913.46

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Solution

The fourth proportional to 28,657.80, 39,550.26 and 15,913.46 is: 21,961.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.80 : 39,550.26 = 15,913.46 : x
  2. Step 2: Convert to fraction form
    28,657.80/39,550.26 = 15,913.46/x
  3. Step 3: Cross multiply
    28,657.80x = 39,550.26 × 15,913.46
  4. Step 4: Simplify right side
    28,657.80x = 629,381,203.18
  5. Step 5: Solve for x
    x = 629,381,203.18/28,657.80
  6. Step 6: Final answer
    x = 21,961.95

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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.