Home / 28,723.05-39,639.60-15,979.05

Finding the Fourth Proportional to 28,723.05, 39,639.60 and 15,979.05

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Solution

The fourth proportional to 28,723.05, 39,639.60 and 15,979.05 is: 22,052.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,723.05 : 39,639.60 = 15,979.05 : x
  2. Step 2: Convert to fraction form
    28,723.05/39,639.60 = 15,979.05/x
  3. Step 3: Cross multiply
    28,723.05x = 39,639.60 × 15,979.05
  4. Step 4: Simplify right side
    28,723.05x = 633,403,150.38
  5. Step 5: Solve for x
    x = 633,403,150.38/28,723.05
  6. Step 6: Final answer
    x = 22,052.09

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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.