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Finding the Fourth Proportional to 12,028.05, 16,605.90 and 7,555.65

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Solution

The fourth proportional to 12,028.05, 16,605.90 and 7,555.65 is: 10,431.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,028.05 : 16,605.90 = 7,555.65 : x
  2. Step 2: Convert to fraction form
    12,028.05/16,605.90 = 7,555.65/x
  3. Step 3: Cross multiply
    12,028.05x = 16,605.90 × 7,555.65
  4. Step 4: Simplify right side
    12,028.05x = 125,468,368.34
  5. Step 5: Solve for x
    x = 125,468,368.34/12,028.05
  6. Step 6: Final answer
    x = 10,431.31

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Half scale
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Double scale
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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.