Home / 20,534.99-28,338.26-11,103.55

Finding the Fourth Proportional to 20,534.99, 28,338.26 and 11,103.55

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Solution

The fourth proportional to 20,534.99, 28,338.26 and 11,103.55 is: 15,322.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.99 : 28,338.26 = 11,103.55 : x
  2. Step 2: Convert to fraction form
    20,534.99/28,338.26 = 11,103.55/x
  3. Step 3: Cross multiply
    20,534.99x = 28,338.26 × 11,103.55
  4. Step 4: Simplify right side
    20,534.99x = 314,655,160.46
  5. Step 5: Solve for x
    x = 314,655,160.46/20,534.99
  6. Step 6: Final answer
    x = 15,322.88

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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.