Home / 12,387,128.28-18,580,685.08-3,868,194.64

Finding the Fourth Proportional to 12,387,128.28, 18,580,685.08 and 3,868,194.64

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Solution

The fourth proportional to 12,387,128.28, 18,580,685.08 and 3,868,194.64 is: 5,802,289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387,128.28 : 18,580,685.08 = 3,868,194.64 : x
  2. Step 2: Convert to fraction form
    12,387,128.28/18,580,685.08 = 3,868,194.64/x
  3. Step 3: Cross multiply
    12,387,128.28x = 18,580,685.08 × 3,868,194.64
  4. Step 4: Simplify right side
    12,387,128.28x = 71,873,706,433,983.97
  5. Step 5: Solve for x
    x = 71,873,706,433,983.97/12,387,128.28
  6. Step 6: Final answer
    x = 5,802,289.67

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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.