Home / 12,209,710.81-18,314,376.66-4,128,361.87

Finding the Fourth Proportional to 12,209,710.81, 18,314,376.66 and 4,128,361.87

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Solution

The fourth proportional to 12,209,710.81, 18,314,376.66 and 4,128,361.87 is: 6,192,478.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209,710.81 : 18,314,376.66 = 4,128,361.87 : x
  2. Step 2: Convert to fraction form
    12,209,710.81/18,314,376.66 = 4,128,361.87/x
  3. Step 3: Cross multiply
    12,209,710.81x = 18,314,376.66 × 4,128,361.87
  4. Step 4: Simplify right side
    12,209,710.81x = 75,608,374,255,320.16
  5. Step 5: Solve for x
    x = 75,608,374,255,320.16/12,209,710.81
  6. Step 6: Final answer
    x = 6,192,478.71

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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.