Home / 11,356.22-15,669.24-6,639.58

Finding the Fourth Proportional to 11,356.22, 15,669.24 and 6,639.58

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Solution

The fourth proportional to 11,356.22, 15,669.24 and 6,639.58 is: 9,161.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,356.22 : 15,669.24 = 6,639.58 : x
  2. Step 2: Convert to fraction form
    11,356.22/15,669.24 = 6,639.58/x
  3. Step 3: Cross multiply
    11,356.22x = 15,669.24 × 6,639.58
  4. Step 4: Simplify right side
    11,356.22x = 104,037,172.52
  5. Step 5: Solve for x
    x = 104,037,172.52/11,356.22
  6. Step 6: Final answer
    x = 9,161.25

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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.