Home / 10,938,689.20-16,408,033.80-7,747,418.80

Finding the Fourth Proportional to 10,938,689.20, 16,408,033.80 and 7,747,418.80

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Solution

The fourth proportional to 10,938,689.20, 16,408,033.80 and 7,747,418.80 is: 11,621,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938,689.20 : 16,408,033.80 = 7,747,418.80 : x
  2. Step 2: Convert to fraction form
    10,938,689.20/16,408,033.80 = 7,747,418.80/x
  3. Step 3: Cross multiply
    10,938,689.20x = 16,408,033.80 × 7,747,418.80
  4. Step 4: Simplify right side
    10,938,689.20x = 127,119,909,533,155.44
  5. Step 5: Solve for x
    x = 127,119,909,533,155.44/10,938,689.20
  6. Step 6: Final answer
    x = 11,621,128.20

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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.