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Finding the Fourth Proportional to 14,652,608.10, 20,221,841.07 and 8,128,339.44

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Solution

The fourth proportional to 14,652,608.10, 20,221,841.07 and 8,128,339.44 is: 11,217,797.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,652,608.10 : 20,221,841.07 = 8,128,339.44 : x
  2. Step 2: Convert to fraction form
    14,652,608.10/20,221,841.07 = 8,128,339.44/x
  3. Step 3: Cross multiply
    14,652,608.10x = 20,221,841.07 × 8,128,339.44
  4. Step 4: Simplify right side
    14,652,608.10x = 164,369,988,318,692.81
  5. Step 5: Solve for x
    x = 164,369,988,318,692.81/14,652,608.10
  6. Step 6: Final answer
    x = 11,217,797.35

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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.