Home / 13,056.91-18,012.19-7,747.97

Finding the Fourth Proportional to 13,056.91, 18,012.19 and 7,747.97

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Solution

The fourth proportional to 13,056.91, 18,012.19 and 7,747.97 is: 10,688.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,056.91 : 18,012.19 = 7,747.97 : x
  2. Step 2: Convert to fraction form
    13,056.91/18,012.19 = 7,747.97/x
  3. Step 3: Cross multiply
    13,056.91x = 18,012.19 × 7,747.97
  4. Step 4: Simplify right side
    13,056.91x = 139,557,914.17
  5. Step 5: Solve for x
    x = 139,557,914.17/13,056.91
  6. Step 6: Final answer
    x = 10,688.43

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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.