Home / 20,693.55-28,560.10-11,619.93

Finding the Fourth Proportional to 20,693.55, 28,560.10 and 11,619.93

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Solution

The fourth proportional to 20,693.55, 28,560.10 and 11,619.93 is: 16,037.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.55 : 28,560.10 = 11,619.93 : x
  2. Step 2: Convert to fraction form
    20,693.55/28,560.10 = 11,619.93/x
  3. Step 3: Cross multiply
    20,693.55x = 28,560.10 × 11,619.93
  4. Step 4: Simplify right side
    20,693.55x = 331,866,249.04
  5. Step 5: Solve for x
    x = 331,866,249.04/20,693.55
  6. Step 6: Final answer
    x = 16,037.19

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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.