Home / 11,390.53-15,718.57-6,677.95

Finding the Fourth Proportional to 11,390.53, 15,718.57 and 6,677.95

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Solution

The fourth proportional to 11,390.53, 15,718.57 and 6,677.95 is: 9,215.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.53 : 15,718.57 = 6,677.95 : x
  2. Step 2: Convert to fraction form
    11,390.53/15,718.57 = 6,677.95/x
  3. Step 3: Cross multiply
    11,390.53x = 15,718.57 × 6,677.95
  4. Step 4: Simplify right side
    11,390.53x = 104,967,824.53
  5. Step 5: Solve for x
    x = 104,967,824.53/11,390.53
  6. Step 6: Final answer
    x = 9,215.36

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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.