Home / 20,728,110.40-31,044,926.40-12,225,054.40

Finding the Fourth Proportional to 20,728,110.40, 31,044,926.40 and 12,225,054.40

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Solution

The fourth proportional to 20,728,110.40, 31,044,926.40 and 12,225,054.40 is: 18,309,720.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,110.40 : 31,044,926.40 = 12,225,054.40 : x
  2. Step 2: Convert to fraction form
    20,728,110.40/31,044,926.40 = 12,225,054.40/x
  3. Step 3: Cross multiply
    20,728,110.40x = 31,044,926.40 × 12,225,054.40
  4. Step 4: Simplify right side
    20,728,110.40x = 379,525,914,083,996.12
  5. Step 5: Solve for x
    x = 379,525,914,083,996.12/20,728,110.40
  6. Step 6: Final answer
    x = 18,309,720.80

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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.