Home / 20,534.86-28,338.15-11,103.46

Finding the Fourth Proportional to 20,534.86, 28,338.15 and 11,103.46

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Solution

The fourth proportional to 20,534.86, 28,338.15 and 11,103.46 is: 15,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534.86 : 28,338.15 = 11,103.46 : x
  2. Step 2: Convert to fraction form
    20,534.86/28,338.15 = 11,103.46/x
  3. Step 3: Cross multiply
    20,534.86x = 28,338.15 × 11,103.46
  4. Step 4: Simplify right side
    20,534.86x = 314,651,515.00
  5. Step 5: Solve for x
    x = 314,651,515.00/20,534.86
  6. Step 6: Final answer
    x = 15,322.80

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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.