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Finding the Fourth Proportional to 13,952,751.40, 20,929,127.10 and 13,168,930.60

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Solution

The fourth proportional to 13,952,751.40, 20,929,127.10 and 13,168,930.60 is: 19,753,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,952,751.40 : 20,929,127.10 = 13,168,930.60 : x
  2. Step 2: Convert to fraction form
    13,952,751.40/20,929,127.10 = 13,168,930.60/x
  3. Step 3: Cross multiply
    13,952,751.40x = 20,929,127.10 × 13,168,930.60
  4. Step 4: Simplify right side
    13,952,751.40x = 275,614,222,298,479.28
  5. Step 5: Solve for x
    x = 275,614,222,298,479.28/13,952,751.40
  6. Step 6: Final answer
    x = 19,753,395.90

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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.