Home / 21,001.66-31,502.46-7,150.66

Finding the Fourth Proportional to 21,001.66, 31,502.46 and 7,150.66

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Solution

The fourth proportional to 21,001.66, 31,502.46 and 7,150.66 is: 10,725.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.66 : 31,502.46 = 7,150.66 : x
  2. Step 2: Convert to fraction form
    21,001.66/31,502.46 = 7,150.66/x
  3. Step 3: Cross multiply
    21,001.66x = 31,502.46 × 7,150.66
  4. Step 4: Simplify right side
    21,001.66x = 225,263,380.62
  5. Step 5: Solve for x
    x = 225,263,380.62/21,001.66
  6. Step 6: Final answer
    x = 10,725.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.