Home / 11,216.16-15,475.04-7,239.60

Finding the Fourth Proportional to 11,216.16, 15,475.04 and 7,239.60

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Solution

The fourth proportional to 11,216.16, 15,475.04 and 7,239.60 is: 9,988.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,216.16 : 15,475.04 = 7,239.60 : x
  2. Step 2: Convert to fraction form
    11,216.16/15,475.04 = 7,239.60/x
  3. Step 3: Cross multiply
    11,216.16x = 15,475.04 × 7,239.60
  4. Step 4: Simplify right side
    11,216.16x = 112,033,099.58
  5. Step 5: Solve for x
    x = 112,033,099.58/11,216.16
  6. Step 6: Final answer
    x = 9,988.54

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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.