Home / 15,940.04-21,997.86-8,868.20

Finding the Fourth Proportional to 15,940.04, 21,997.86 and 8,868.20

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Solution

The fourth proportional to 15,940.04, 21,997.86 and 8,868.20 is: 12,238.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,940.04 : 21,997.86 = 8,868.20 : x
  2. Step 2: Convert to fraction form
    15,940.04/21,997.86 = 8,868.20/x
  3. Step 3: Cross multiply
    15,940.04x = 21,997.86 × 8,868.20
  4. Step 4: Simplify right side
    15,940.04x = 195,081,422.05
  5. Step 5: Solve for x
    x = 195,081,422.05/15,940.04
  6. Step 6: Final answer
    x = 12,238.45

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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.