Home / 18,781,286.40-28,171,929.60-11,569,435.20

Finding the Fourth Proportional to 18,781,286.40, 28,171,929.60 and 11,569,435.20

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Solution

The fourth proportional to 18,781,286.40, 28,171,929.60 and 11,569,435.20 is: 17,354,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781,286.40 : 28,171,929.60 = 11,569,435.20 : x
  2. Step 2: Convert to fraction form
    18,781,286.40/28,171,929.60 = 11,569,435.20/x
  3. Step 3: Cross multiply
    18,781,286.40x = 28,171,929.60 × 11,569,435.20
  4. Step 4: Simplify right side
    18,781,286.40x = 325,933,313,966,161.94
  5. Step 5: Solve for x
    x = 325,933,313,966,161.94/18,781,286.40
  6. Step 6: Final answer
    x = 17,354,152.80

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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.