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Finding the Fourth Proportional to 9,104.90, 12,555.45 and 8,901.23

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Solution

The fourth proportional to 9,104.90, 12,555.45 and 8,901.23 is: 12,274.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,104.90 : 12,555.45 = 8,901.23 : x
  2. Step 2: Convert to fraction form
    9,104.90/12,555.45 = 8,901.23/x
  3. Step 3: Cross multiply
    9,104.90x = 12,555.45 × 8,901.23
  4. Step 4: Simplify right side
    9,104.90x = 111,758,885.43
  5. Step 5: Solve for x
    x = 111,758,885.43/9,104.90
  6. Step 6: Final answer
    x = 12,274.59

Related Problems

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Half scale
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Double scale
Find fourth proportional to 9,105.90, 12,556.83 and 8,902.23
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.