Home / 20,795.43-28,697.79-11,364.21

Finding the Fourth Proportional to 20,795.43, 28,697.79 and 11,364.21

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Solution

The fourth proportional to 20,795.43, 28,697.79 and 11,364.21 is: 15,682.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.43 : 28,697.79 = 11,364.21 : x
  2. Step 2: Convert to fraction form
    20,795.43/28,697.79 = 11,364.21/x
  3. Step 3: Cross multiply
    20,795.43x = 28,697.79 × 11,364.21
  4. Step 4: Simplify right side
    20,795.43x = 326,127,712.10
  5. Step 5: Solve for x
    x = 326,127,712.10/20,795.43
  6. Step 6: Final answer
    x = 15,682.66

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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.