Home / 9,911.97-13,678.81-5,663.66

Finding the Fourth Proportional to 9,911.97, 13,678.81 and 5,663.66

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Solution

The fourth proportional to 9,911.97, 13,678.81 and 5,663.66 is: 7,816.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.97 : 13,678.81 = 5,663.66 : x
  2. Step 2: Convert to fraction form
    9,911.97/13,678.81 = 5,663.66/x
  3. Step 3: Cross multiply
    9,911.97x = 13,678.81 × 5,663.66
  4. Step 4: Simplify right side
    9,911.97x = 77,472,046.49
  5. Step 5: Solve for x
    x = 77,472,046.49/9,911.97
  6. Step 6: Final answer
    x = 7,816.01

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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.