Home / 11,920.05-17,885.88-4,902.17

Finding the Fourth Proportional to 11,920.05, 17,885.88 and 4,902.17

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Solution

The fourth proportional to 11,920.05, 17,885.88 and 4,902.17 is: 7,355.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.05 : 17,885.88 = 4,902.17 : x
  2. Step 2: Convert to fraction form
    11,920.05/17,885.88 = 4,902.17/x
  3. Step 3: Cross multiply
    11,920.05x = 17,885.88 × 4,902.17
  4. Step 4: Simplify right side
    11,920.05x = 87,679,669.07
  5. Step 5: Solve for x
    x = 87,679,669.07/11,920.05
  6. Step 6: Final answer
    x = 7,355.65

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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.