Home / 13,179,404.20-19,748,111.10-9,778,181.80

Finding the Fourth Proportional to 13,179,404.20, 19,748,111.10 and 9,778,181.80

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Solution

The fourth proportional to 13,179,404.20, 19,748,111.10 and 9,778,181.80 is: 14,651,695.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179,404.20 : 19,748,111.10 = 9,778,181.80 : x
  2. Step 2: Convert to fraction form
    13,179,404.20/19,748,111.10 = 9,778,181.80/x
  3. Step 3: Cross multiply
    13,179,404.20x = 19,748,111.10 × 9,778,181.80
  4. Step 4: Simplify right side
    13,179,404.20x = 193,100,620,542,398
  5. Step 5: Solve for x
    x = 193,100,620,542,398/13,179,404.20
  6. Step 6: Final answer
    x = 14,651,695.75

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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.