Home / 15,664.69-21,617.36-8,591.11

Finding the Fourth Proportional to 15,664.69, 21,617.36 and 8,591.11

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Solution

The fourth proportional to 15,664.69, 21,617.36 and 8,591.11 is: 11,855.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664.69 : 21,617.36 = 8,591.11 : x
  2. Step 2: Convert to fraction form
    15,664.69/21,617.36 = 8,591.11/x
  3. Step 3: Cross multiply
    15,664.69x = 21,617.36 × 8,591.11
  4. Step 4: Simplify right side
    15,664.69x = 185,717,150.32
  5. Step 5: Solve for x
    x = 185,717,150.32/15,664.69
  6. Step 6: Final answer
    x = 11,855.78

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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.