Home / 11,221.02-15,488.16-7,864.73

Finding the Fourth Proportional to 11,221.02, 15,488.16 and 7,864.73

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Solution

The fourth proportional to 11,221.02, 15,488.16 and 7,864.73 is: 10,855.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.02 : 15,488.16 = 7,864.73 : x
  2. Step 2: Convert to fraction form
    11,221.02/15,488.16 = 7,864.73/x
  3. Step 3: Cross multiply
    11,221.02x = 15,488.16 × 7,864.73
  4. Step 4: Simplify right side
    11,221.02x = 121,810,119.16
  5. Step 5: Solve for x
    x = 121,810,119.16/11,221.02
  6. Step 6: Final answer
    x = 10,855.53

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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.