Home / 15,905.69-21,949.89-8,832.50

Finding the Fourth Proportional to 15,905.69, 21,949.89 and 8,832.50

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Solution

The fourth proportional to 15,905.69, 21,949.89 and 8,832.50 is: 12,188.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.69 : 21,949.89 = 8,832.50 : x
  2. Step 2: Convert to fraction form
    15,905.69/21,949.89 = 8,832.50/x
  3. Step 3: Cross multiply
    15,905.69x = 21,949.89 × 8,832.50
  4. Step 4: Simplify right side
    15,905.69x = 193,872,403.43
  5. Step 5: Solve for x
    x = 193,872,403.43/15,905.69
  6. Step 6: Final answer
    x = 12,188.87

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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.