Home / 9,901.36-13,663.48-5,920.12

Finding the Fourth Proportional to 9,901.36, 13,663.48 and 5,920.12

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Solution

The fourth proportional to 9,901.36, 13,663.48 and 5,920.12 is: 8,169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,901.36 : 13,663.48 = 5,920.12 : x
  2. Step 2: Convert to fraction form
    9,901.36/13,663.48 = 5,920.12/x
  3. Step 3: Cross multiply
    9,901.36x = 13,663.48 × 5,920.12
  4. Step 4: Simplify right side
    9,901.36x = 80,889,441.22
  5. Step 5: Solve for x
    x = 80,889,441.22/9,901.36
  6. Step 6: Final answer
    x = 8,169.53

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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.