Home / 11,870.85-16,385.00-7,391.95

Finding the Fourth Proportional to 11,870.85, 16,385.00 and 7,391.95

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Solution

The fourth proportional to 11,870.85, 16,385.00 and 7,391.95 is: 10,202.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,870.85 : 16,385.00 = 7,391.95 : x
  2. Step 2: Convert to fraction form
    11,870.85/16,385.00 = 7,391.95/x
  3. Step 3: Cross multiply
    11,870.85x = 16,385.00 × 7,391.95
  4. Step 4: Simplify right side
    11,870.85x = 121,117,119.23
  5. Step 5: Solve for x
    x = 121,117,119.23/11,870.85
  6. Step 6: Final answer
    x = 10,202.91

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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.