Home / 15,940.50-21,999.12-8,867.46

Finding the Fourth Proportional to 15,940.50, 21,999.12 and 8,867.46

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Solution

The fourth proportional to 15,940.50, 21,999.12 and 8,867.46 is: 12,237.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,940.50 : 21,999.12 = 8,867.46 : x
  2. Step 2: Convert to fraction form
    15,940.50/21,999.12 = 8,867.46/x
  3. Step 3: Cross multiply
    15,940.50x = 21,999.12 × 8,867.46
  4. Step 4: Simplify right side
    15,940.50x = 195,076,316.64
  5. Step 5: Solve for x
    x = 195,076,316.64/15,940.50
  6. Step 6: Final answer
    x = 12,237.78

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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.