Home / 12,459,969.60-18,690,537.60-3,940,972.80

Finding the Fourth Proportional to 12,459,969.60, 18,690,537.60 and 3,940,972.80

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Solution

The fourth proportional to 12,459,969.60, 18,690,537.60 and 3,940,972.80 is: 5,911,643.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459,969.60 : 18,690,537.60 = 3,940,972.80 : x
  2. Step 2: Convert to fraction form
    12,459,969.60/18,690,537.60 = 3,940,972.80/x
  3. Step 3: Cross multiply
    12,459,969.60x = 18,690,537.60 × 3,940,972.80
  4. Step 4: Simplify right side
    12,459,969.60x = 73,658,900,298,977.28
  5. Step 5: Solve for x
    x = 73,658,900,298,977.28/12,459,969.60
  6. Step 6: Final answer
    x = 5,911,643.66

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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.