Home / 12,845.70-19,268.55-7,316.10

Finding the Fourth Proportional to 12,845.70, 19,268.55 and 7,316.10

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Solution

The fourth proportional to 12,845.70, 19,268.55 and 7,316.10 is: 10,974.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,845.70 : 19,268.55 = 7,316.10 : x
  2. Step 2: Convert to fraction form
    12,845.70/19,268.55 = 7,316.10/x
  3. Step 3: Cross multiply
    12,845.70x = 19,268.55 × 7,316.10
  4. Step 4: Simplify right side
    12,845.70x = 140,970,638.66
  5. Step 5: Solve for x
    x = 140,970,638.66/12,845.70
  6. Step 6: Final answer
    x = 10,974.15

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Double scale
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Similar ratio
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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.