Home / 20,877,930.65-28,812,204.93-12,057,222.31

Finding the Fourth Proportional to 20,877,930.65, 28,812,204.93 and 12,057,222.31

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Solution

The fourth proportional to 20,877,930.65, 28,812,204.93 and 12,057,222.31 is: 16,639,348.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877,930.65 : 28,812,204.93 = 12,057,222.31 : x
  2. Step 2: Convert to fraction form
    20,877,930.65/28,812,204.93 = 12,057,222.31/x
  3. Step 3: Cross multiply
    20,877,930.65x = 28,812,204.93 × 12,057,222.31
  4. Step 4: Simplify right side
    20,877,930.65x = 347,395,160,217,540.69
  5. Step 5: Solve for x
    x = 347,395,160,217,540.69/20,877,930.65
  6. Step 6: Final answer
    x = 16,639,348.32

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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.