Home / 20,799.27-28,700.40-11,845.64

Finding the Fourth Proportional to 20,799.27, 28,700.40 and 11,845.64

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Solution

The fourth proportional to 20,799.27, 28,700.40 and 11,845.64 is: 16,345.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.27 : 28,700.40 = 11,845.64 : x
  2. Step 2: Convert to fraction form
    20,799.27/28,700.40 = 11,845.64/x
  3. Step 3: Cross multiply
    20,799.27x = 28,700.40 × 11,845.64
  4. Step 4: Simplify right side
    20,799.27x = 339,974,462.75
  5. Step 5: Solve for x
    x = 339,974,462.75/20,799.27
  6. Step 6: Final answer
    x = 16,345.50

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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.