Home / 18,886.06-28,332.51-7,786.57

Finding the Fourth Proportional to 18,886.06, 28,332.51 and 7,786.57

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Solution

The fourth proportional to 18,886.06, 28,332.51 and 7,786.57 is: 11,681.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.06 : 28,332.51 = 7,786.57 : x
  2. Step 2: Convert to fraction form
    18,886.06/28,332.51 = 7,786.57/x
  3. Step 3: Cross multiply
    18,886.06x = 28,332.51 × 7,786.57
  4. Step 4: Simplify right side
    18,886.06x = 220,613,072.39
  5. Step 5: Solve for x
    x = 220,613,072.39/18,886.06
  6. Step 6: Final answer
    x = 11,681.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.