Home / 11,756.22-16,221.54-7,775.18

Finding the Fourth Proportional to 11,756.22, 16,221.54 and 7,775.18

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Solution

The fourth proportional to 11,756.22, 16,221.54 and 7,775.18 is: 10,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,756.22 : 16,221.54 = 7,775.18 : x
  2. Step 2: Convert to fraction form
    11,756.22/16,221.54 = 7,775.18/x
  3. Step 3: Cross multiply
    11,756.22x = 16,221.54 × 7,775.18
  4. Step 4: Simplify right side
    11,756.22x = 126,125,393.38
  5. Step 5: Solve for x
    x = 126,125,393.38/11,756.22
  6. Step 6: Final answer
    x = 10,728.40

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Half scale
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Double scale
Find fourth proportional to 11,757.22, 16,222.92 and 7,776.18
Similar ratio
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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.