Home / 20,716.46-28,588.85-11,285.02

Finding the Fourth Proportional to 20,716.46, 28,588.85 and 11,285.02

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Solution

The fourth proportional to 20,716.46, 28,588.85 and 11,285.02 is: 15,573.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.46 : 28,588.85 = 11,285.02 : x
  2. Step 2: Convert to fraction form
    20,716.46/28,588.85 = 11,285.02/x
  3. Step 3: Cross multiply
    20,716.46x = 28,588.85 × 11,285.02
  4. Step 4: Simplify right side
    20,716.46x = 322,625,765.66
  5. Step 5: Solve for x
    x = 322,625,765.66/20,716.46
  6. Step 6: Final answer
    x = 15,573.40

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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.