Home / 13,136,380.34-18,140,724.21-12,420,716.02

Finding the Fourth Proportional to 13,136,380.34, 18,140,724.21 and 12,420,716.02

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Solution

The fourth proportional to 13,136,380.34, 18,140,724.21 and 12,420,716.02 is: 17,152,425.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136,380.34 : 18,140,724.21 = 12,420,716.02 : x
  2. Step 2: Convert to fraction form
    13,136,380.34/18,140,724.21 = 12,420,716.02/x
  3. Step 3: Cross multiply
    13,136,380.34x = 18,140,724.21 × 12,420,716.02
  4. Step 4: Simplify right side
    13,136,380.34x = 225,320,783,809,548.84
  5. Step 5: Solve for x
    x = 225,320,783,809,548.84/13,136,380.34
  6. Step 6: Final answer
    x = 17,152,425.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.