Home / 10,968.72-15,128.28-6,716.28

Finding the Fourth Proportional to 10,968.72, 15,128.28 and 6,716.28

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Solution

The fourth proportional to 10,968.72, 15,128.28 and 6,716.28 is: 9,263.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,968.72 : 15,128.28 = 6,716.28 : x
  2. Step 2: Convert to fraction form
    10,968.72/15,128.28 = 6,716.28/x
  3. Step 3: Cross multiply
    10,968.72x = 15,128.28 × 6,716.28
  4. Step 4: Simplify right side
    10,968.72x = 101,605,764.40
  5. Step 5: Solve for x
    x = 101,605,764.40/10,968.72
  6. Step 6: Final answer
    x = 9,263.23

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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.