Home / 11,921.36-17,881.98-4,900.18

Finding the Fourth Proportional to 11,921.36, 17,881.98 and 4,900.18

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Solution

The fourth proportional to 11,921.36, 17,881.98 and 4,900.18 is: 7,350.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.36 : 17,881.98 = 4,900.18 : x
  2. Step 2: Convert to fraction form
    11,921.36/17,881.98 = 4,900.18/x
  3. Step 3: Cross multiply
    11,921.36x = 17,881.98 × 4,900.18
  4. Step 4: Simplify right side
    11,921.36x = 87,624,920.76
  5. Step 5: Solve for x
    x = 87,624,920.76/11,921.36
  6. Step 6: Final answer
    x = 7,350.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.