Home / 20,448,507.15-30,657,506.40-12,359,778.30

Finding the Fourth Proportional to 20,448,507.15, 30,657,506.40 and 12,359,778.30

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Solution

The fourth proportional to 20,448,507.15, 30,657,506.40 and 12,359,778.30 is: 18,530,447.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448,507.15 : 30,657,506.40 = 12,359,778.30 : x
  2. Step 2: Convert to fraction form
    20,448,507.15/30,657,506.40 = 12,359,778.30/x
  3. Step 3: Cross multiply
    20,448,507.15x = 30,657,506.40 × 12,359,778.30
  4. Step 4: Simplify right side
    20,448,507.15x = 378,919,982,334,831.12
  5. Step 5: Solve for x
    x = 378,919,982,334,831.12/20,448,507.15
  6. Step 6: Final answer
    x = 18,530,447.21

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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.