Home / 13,446,019.20-20,169,028.80-7,777,315.20

Finding the Fourth Proportional to 13,446,019.20, 20,169,028.80 and 7,777,315.20

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Solution

The fourth proportional to 13,446,019.20, 20,169,028.80 and 7,777,315.20 is: 11,665,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446,019.20 : 20,169,028.80 = 7,777,315.20 : x
  2. Step 2: Convert to fraction form
    13,446,019.20/20,169,028.80 = 7,777,315.20/x
  3. Step 3: Cross multiply
    13,446,019.20x = 20,169,028.80 × 7,777,315.20
  4. Step 4: Simplify right side
    13,446,019.20x = 156,860,894,255,477.78
  5. Step 5: Solve for x
    x = 156,860,894,255,477.78/13,446,019.20
  6. Step 6: Final answer
    x = 11,665,972.80

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Similar ratio
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1.5x scale

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.