Home / 15,716.09-21,688.62-8,546.50

Finding the Fourth Proportional to 15,716.09, 21,688.62 and 8,546.50

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Solution

The fourth proportional to 15,716.09, 21,688.62 and 8,546.50 is: 11,794.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,716.09 : 21,688.62 = 8,546.50 : x
  2. Step 2: Convert to fraction form
    15,716.09/21,688.62 = 8,546.50/x
  3. Step 3: Cross multiply
    15,716.09x = 21,688.62 × 8,546.50
  4. Step 4: Simplify right side
    15,716.09x = 185,361,790.83
  5. Step 5: Solve for x
    x = 185,361,790.83/15,716.09
  6. Step 6: Final answer
    x = 11,794.40

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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.