Home / 11,090.15-15,278.40-7,726.88

Finding the Fourth Proportional to 11,090.15, 15,278.40 and 7,726.88

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Solution

The fourth proportional to 11,090.15, 15,278.40 and 7,726.88 is: 10,644.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,090.15 : 15,278.40 = 7,726.88 : x
  2. Step 2: Convert to fraction form
    11,090.15/15,278.40 = 7,726.88/x
  3. Step 3: Cross multiply
    11,090.15x = 15,278.40 × 7,726.88
  4. Step 4: Simplify right side
    11,090.15x = 118,054,363.39
  5. Step 5: Solve for x
    x = 118,054,363.39/11,090.15
  6. Step 6: Final answer
    x = 10,644.97

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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.