Home / 11,675.54-16,111.86-6,639.50

Finding the Fourth Proportional to 11,675.54, 16,111.86 and 6,639.50

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Solution

The fourth proportional to 11,675.54, 16,111.86 and 6,639.50 is: 9,162.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,675.54 : 16,111.86 = 6,639.50 : x
  2. Step 2: Convert to fraction form
    11,675.54/16,111.86 = 6,639.50/x
  3. Step 3: Cross multiply
    11,675.54x = 16,111.86 × 6,639.50
  4. Step 4: Simplify right side
    11,675.54x = 106,974,694.47
  5. Step 5: Solve for x
    x = 106,974,694.47/11,675.54
  6. Step 6: Final answer
    x = 9,162.29

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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.