Home / 28,731,020.52-39,648,481.70-15,678,501.52

Finding the Fourth Proportional to 28,731,020.52, 39,648,481.70 and 15,678,501.52

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Solution

The fourth proportional to 28,731,020.52, 39,648,481.70 and 15,678,501.52 is: 21,636,153.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731,020.52 : 39,648,481.70 = 15,678,501.52 : x
  2. Step 2: Convert to fraction form
    28,731,020.52/39,648,481.70 = 15,678,501.52/x
  3. Step 3: Cross multiply
    28,731,020.52x = 39,648,481.70 × 15,678,501.52
  4. Step 4: Simplify right side
    28,731,020.52x = 621,628,780,599,142.25
  5. Step 5: Solve for x
    x = 621,628,780,599,142.25/28,731,020.52
  6. Step 6: Final answer
    x = 21,636,153.86

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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.