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Finding the Fourth Proportional to 11,156.58, 15,398.22 and 7,379.88

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Solution

The fourth proportional to 11,156.58, 15,398.22 and 7,379.88 is: 10,185.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.58 : 15,398.22 = 7,379.88 : x
  2. Step 2: Convert to fraction form
    11,156.58/15,398.22 = 7,379.88/x
  3. Step 3: Cross multiply
    11,156.58x = 15,398.22 × 7,379.88
  4. Step 4: Simplify right side
    11,156.58x = 113,637,015.81
  5. Step 5: Solve for x
    x = 113,637,015.81/11,156.58
  6. Step 6: Final answer
    x = 10,185.65

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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.