Home / 20,993.27-28,968.57-12,925.65

Finding the Fourth Proportional to 20,993.27, 28,968.57 and 12,925.65

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Solution

The fourth proportional to 20,993.27, 28,968.57 and 12,925.65 is: 17,836.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.27 : 28,968.57 = 12,925.65 : x
  2. Step 2: Convert to fraction form
    20,993.27/28,968.57 = 12,925.65/x
  3. Step 3: Cross multiply
    20,993.27x = 28,968.57 × 12,925.65
  4. Step 4: Simplify right side
    20,993.27x = 374,437,536.66
  5. Step 5: Solve for x
    x = 374,437,536.66/20,993.27
  6. Step 6: Final answer
    x = 17,836.07

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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.