Home / 20,795.78-28,734.84-15,410.48

Finding the Fourth Proportional to 20,795.78, 28,734.84 and 15,410.48

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Solution

The fourth proportional to 20,795.78, 28,734.84 and 15,410.48 is: 21,293.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.78 : 28,734.84 = 15,410.48 : x
  2. Step 2: Convert to fraction form
    20,795.78/28,734.84 = 15,410.48/x
  3. Step 3: Cross multiply
    20,795.78x = 28,734.84 × 15,410.48
  4. Step 4: Simplify right side
    20,795.78x = 442,817,677.12
  5. Step 5: Solve for x
    x = 442,817,677.12/20,795.78
  6. Step 6: Final answer
    x = 21,293.63

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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.