Home / 12,636,651.88-18,954,954.78-4,116,978.28

Finding the Fourth Proportional to 12,636,651.88, 18,954,954.78 and 4,116,978.28

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Solution

The fourth proportional to 12,636,651.88, 18,954,954.78 and 4,116,978.28 is: 6,175,459.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636,651.88 : 18,954,954.78 = 4,116,978.28 : x
  2. Step 2: Convert to fraction form
    12,636,651.88/18,954,954.78 = 4,116,978.28/x
  3. Step 3: Cross multiply
    12,636,651.88x = 18,954,954.78 × 4,116,978.28
  4. Step 4: Simplify right side
    12,636,651.88x = 78,037,137,127,642.17
  5. Step 5: Solve for x
    x = 78,037,137,127,642.17/12,636,651.88
  6. Step 6: Final answer
    x = 6,175,459.91

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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.