Home / 11,289.19-15,608.81-9,887.92

Finding the Fourth Proportional to 11,289.19, 15,608.81 and 9,887.92

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Solution

The fourth proportional to 11,289.19, 15,608.81 and 9,887.92 is: 13,671.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.19 : 15,608.81 = 9,887.92 : x
  2. Step 2: Convert to fraction form
    11,289.19/15,608.81 = 9,887.92/x
  3. Step 3: Cross multiply
    11,289.19x = 15,608.81 × 9,887.92
  4. Step 4: Simplify right side
    11,289.19x = 154,338,664.58
  5. Step 5: Solve for x
    x = 154,338,664.58/11,289.19
  6. Step 6: Final answer
    x = 13,671.37

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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.