Home / 11,158.09-15,395.06-7,972.36

Finding the Fourth Proportional to 11,158.09, 15,395.06 and 7,972.36

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Solution

The fourth proportional to 11,158.09, 15,395.06 and 7,972.36 is: 10,999.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,158.09 : 15,395.06 = 7,972.36 : x
  2. Step 2: Convert to fraction form
    11,158.09/15,395.06 = 7,972.36/x
  3. Step 3: Cross multiply
    11,158.09x = 15,395.06 × 7,972.36
  4. Step 4: Simplify right side
    11,158.09x = 122,734,941.98
  5. Step 5: Solve for x
    x = 122,734,941.98/11,158.09
  6. Step 6: Final answer
    x = 10,999.64

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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.