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Finding the Fourth Proportional to 11,802.70, 17,697.30 and 4,407.40

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Solution

The fourth proportional to 11,802.70, 17,697.30 and 4,407.40 is: 6,608.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,802.70 : 17,697.30 = 4,407.40 : x
  2. Step 2: Convert to fraction form
    11,802.70/17,697.30 = 4,407.40/x
  3. Step 3: Cross multiply
    11,802.70x = 17,697.30 × 4,407.40
  4. Step 4: Simplify right side
    11,802.70x = 77,999,080.02
  5. Step 5: Solve for x
    x = 77,999,080.02/11,802.70
  6. Step 6: Final answer
    x = 6,608.58

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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.