Home / 28,403.39-39,198.39-15,656.56

Finding the Fourth Proportional to 28,403.39, 39,198.39 and 15,656.56

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Solution

The fourth proportional to 28,403.39, 39,198.39 and 15,656.56 is: 21,607.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.39 : 39,198.39 = 15,656.56 : x
  2. Step 2: Convert to fraction form
    28,403.39/39,198.39 = 15,656.56/x
  3. Step 3: Cross multiply
    28,403.39x = 39,198.39 × 15,656.56
  4. Step 4: Simplify right side
    28,403.39x = 613,711,944.94
  5. Step 5: Solve for x
    x = 613,711,944.94/28,403.39
  6. Step 6: Final answer
    x = 21,607.00

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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.