Home / 15,619.70-21,552.66-8,905.34

Finding the Fourth Proportional to 15,619.70, 21,552.66 and 8,905.34

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Solution

The fourth proportional to 15,619.70, 21,552.66 and 8,905.34 is: 12,287.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,619.70 : 21,552.66 = 8,905.34 : x
  2. Step 2: Convert to fraction form
    15,619.70/21,552.66 = 8,905.34/x
  3. Step 3: Cross multiply
    15,619.70x = 21,552.66 × 8,905.34
  4. Step 4: Simplify right side
    15,619.70x = 191,933,765.20
  5. Step 5: Solve for x
    x = 191,933,765.20/15,619.70
  6. Step 6: Final answer
    x = 12,287.93

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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.