Home / 11,119.74-15,342.81-6,642.81

Finding the Fourth Proportional to 11,119.74, 15,342.81 and 6,642.81

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Solution

The fourth proportional to 11,119.74, 15,342.81 and 6,642.81 is: 9,165.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.74 : 15,342.81 = 6,642.81 : x
  2. Step 2: Convert to fraction form
    11,119.74/15,342.81 = 6,642.81/x
  3. Step 3: Cross multiply
    11,119.74x = 15,342.81 × 6,642.81
  4. Step 4: Simplify right side
    11,119.74x = 101,919,338.48
  5. Step 5: Solve for x
    x = 101,919,338.48/11,119.74
  6. Step 6: Final answer
    x = 9,165.62

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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.