Home / 15,940.92-21,999.18-13,283.88

Finding the Fourth Proportional to 15,940.92, 21,999.18 and 13,283.88

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Solution

The fourth proportional to 15,940.92, 21,999.18 and 13,283.88 is: 18,332.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,940.92 : 21,999.18 = 13,283.88 : x
  2. Step 2: Convert to fraction form
    15,940.92/21,999.18 = 13,283.88/x
  3. Step 3: Cross multiply
    15,940.92x = 21,999.18 × 13,283.88
  4. Step 4: Simplify right side
    15,940.92x = 292,234,467.22
  5. Step 5: Solve for x
    x = 292,234,467.22/15,940.92
  6. Step 6: Final answer
    x = 18,332.35

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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.