Home / 11,370.71-15,687.22-7,120.01

Finding the Fourth Proportional to 11,370.71, 15,687.22 and 7,120.01

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Solution

The fourth proportional to 11,370.71, 15,687.22 and 7,120.01 is: 9,822.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,370.71 : 15,687.22 = 7,120.01 : x
  2. Step 2: Convert to fraction form
    11,370.71/15,687.22 = 7,120.01/x
  3. Step 3: Cross multiply
    11,370.71x = 15,687.22 × 7,120.01
  4. Step 4: Simplify right side
    11,370.71x = 111,693,163.27
  5. Step 5: Solve for x
    x = 111,693,163.27/11,370.71
  6. Step 6: Final answer
    x = 9,822.88

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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.