Home / 22,558.53-31,131.84-12,999.84

Finding the Fourth Proportional to 22,558.53, 31,131.84 and 12,999.84

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Solution

The fourth proportional to 22,558.53, 31,131.84 and 12,999.84 is: 17,940.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,558.53 : 31,131.84 = 12,999.84 : x
  2. Step 2: Convert to fraction form
    22,558.53/31,131.84 = 12,999.84/x
  3. Step 3: Cross multiply
    22,558.53x = 31,131.84 × 12,999.84
  4. Step 4: Simplify right side
    22,558.53x = 404,708,938.91
  5. Step 5: Solve for x
    x = 404,708,938.91/22,558.53
  6. Step 6: Final answer
    x = 17,940.40

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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.