Home / 9,912.47-13,680.36-5,664.22

Finding the Fourth Proportional to 9,912.47, 13,680.36 and 5,664.22

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Solution

The fourth proportional to 9,912.47, 13,680.36 and 5,664.22 is: 7,817.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.47 : 13,680.36 = 5,664.22 : x
  2. Step 2: Convert to fraction form
    9,912.47/13,680.36 = 5,664.22/x
  3. Step 3: Cross multiply
    9,912.47x = 13,680.36 × 5,664.22
  4. Step 4: Simplify right side
    9,912.47x = 77,488,534.52
  5. Step 5: Solve for x
    x = 77,488,534.52/9,912.47
  6. Step 6: Final answer
    x = 7,817.28

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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.