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Finding the Fourth Proportional to 11,386.03, 15,711.15 and 6,349.65

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Solution

The fourth proportional to 11,386.03, 15,711.15 and 6,349.65 is: 8,761.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,386.03 : 15,711.15 = 6,349.65 : x
  2. Step 2: Convert to fraction form
    11,386.03/15,711.15 = 6,349.65/x
  3. Step 3: Cross multiply
    11,386.03x = 15,711.15 × 6,349.65
  4. Step 4: Simplify right side
    11,386.03x = 99,760,303.60
  5. Step 5: Solve for x
    x = 99,760,303.60/11,386.03
  6. Step 6: Final answer
    x = 8,761.64

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Double scale
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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.