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Finding the Fourth Proportional to 13,330.40, 20,007.72 and 7,095.68

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Solution

The fourth proportional to 13,330.40, 20,007.72 and 7,095.68 is: 10,649.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.40 : 20,007.72 = 7,095.68 : x
  2. Step 2: Convert to fraction form
    13,330.40/20,007.72 = 7,095.68/x
  3. Step 3: Cross multiply
    13,330.40x = 20,007.72 × 7,095.68
  4. Step 4: Simplify right side
    13,330.40x = 141,968,343.17
  5. Step 5: Solve for x
    x = 141,968,343.17/13,330.40
  6. Step 6: Final answer
    x = 10,649.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.