Home / 15,628.11-21,566.85-8,555.19

Finding the Fourth Proportional to 15,628.11, 21,566.85 and 8,555.19

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Solution

The fourth proportional to 15,628.11, 21,566.85 and 8,555.19 is: 11,806.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.11 : 21,566.85 = 8,555.19 : x
  2. Step 2: Convert to fraction form
    15,628.11/21,566.85 = 8,555.19/x
  3. Step 3: Cross multiply
    15,628.11x = 21,566.85 × 8,555.19
  4. Step 4: Simplify right side
    15,628.11x = 184,508,499.45
  5. Step 5: Solve for x
    x = 184,508,499.45/15,628.11
  6. Step 6: Final answer
    x = 11,806.19

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Half scale
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Double scale
Find fourth proportional to 15,629.11, 21,568.23 and 8,556.19
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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.