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Finding the Fourth Proportional to 11,357.19, 15,664.03 and 7,379.59

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Solution

The fourth proportional to 11,357.19, 15,664.03 and 7,379.59 is: 10,178.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,357.19 : 15,664.03 = 7,379.59 : x
  2. Step 2: Convert to fraction form
    11,357.19/15,664.03 = 7,379.59/x
  3. Step 3: Cross multiply
    11,357.19x = 15,664.03 × 7,379.59
  4. Step 4: Simplify right side
    11,357.19x = 115,594,119.15
  5. Step 5: Solve for x
    x = 115,594,119.15/11,357.19
  6. Step 6: Final answer
    x = 10,178.06

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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.