Home / 11,116.71-15,342.39-6,400.89

Finding the Fourth Proportional to 11,116.71, 15,342.39 and 6,400.89

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Solution

The fourth proportional to 11,116.71, 15,342.39 and 6,400.89 is: 8,833.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,116.71 : 15,342.39 = 6,400.89 : x
  2. Step 2: Convert to fraction form
    11,116.71/15,342.39 = 6,400.89/x
  3. Step 3: Cross multiply
    11,116.71x = 15,342.39 × 6,400.89
  4. Step 4: Simplify right side
    11,116.71x = 98,204,950.73
  5. Step 5: Solve for x
    x = 98,204,950.73/11,116.71
  6. Step 6: Final answer
    x = 8,833.99

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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.