Home / 28,731,020.60-39,648,481.79-15,678,501.59

Finding the Fourth Proportional to 28,731,020.60, 39,648,481.79 and 15,678,501.59

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Solution

The fourth proportional to 28,731,020.60, 39,648,481.79 and 15,678,501.59 is: 21,636,153.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731,020.60 : 39,648,481.79 = 15,678,501.59 : x
  2. Step 2: Convert to fraction form
    28,731,020.60/39,648,481.79 = 15,678,501.59/x
  3. Step 3: Cross multiply
    28,731,020.60x = 39,648,481.79 × 15,678,501.59
  4. Step 4: Simplify right side
    28,731,020.60x = 621,628,784,806,329.62
  5. Step 5: Solve for x
    x = 621,628,784,806,329.62/28,731,020.60
  6. Step 6: Final answer
    x = 21,636,153.95

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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.