Home / 11,216.22-15,478.79-6,969.63

Finding the Fourth Proportional to 11,216.22, 15,478.79 and 6,969.63

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Solution

The fourth proportional to 11,216.22, 15,478.79 and 6,969.63 is: 9,618.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,216.22 : 15,478.79 = 6,969.63 : x
  2. Step 2: Convert to fraction form
    11,216.22/15,478.79 = 6,969.63/x
  3. Step 3: Cross multiply
    11,216.22x = 15,478.79 × 6,969.63
  4. Step 4: Simplify right side
    11,216.22x = 107,881,439.15
  5. Step 5: Solve for x
    x = 107,881,439.15/11,216.22
  6. Step 6: Final answer
    x = 9,618.34

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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.