Home / 11,521.86-15,902.34-7,216.95

Finding the Fourth Proportional to 11,521.86, 15,902.34 and 7,216.95

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Solution

The fourth proportional to 11,521.86, 15,902.34 and 7,216.95 is: 9,960.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,521.86 : 15,902.34 = 7,216.95 : x
  2. Step 2: Convert to fraction form
    11,521.86/15,902.34 = 7,216.95/x
  3. Step 3: Cross multiply
    11,521.86x = 15,902.34 × 7,216.95
  4. Step 4: Simplify right side
    11,521.86x = 114,766,392.66
  5. Step 5: Solve for x
    x = 114,766,392.66/11,521.86
  6. Step 6: Final answer
    x = 9,960.75

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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.