Home / 18,781,237.74-25,942,420.52-15,531,180.78

Finding the Fourth Proportional to 18,781,237.74, 25,942,420.52 and 15,531,180.78

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Solution

The fourth proportional to 18,781,237.74, 25,942,420.52 and 15,531,180.78 is: 21,453,134.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781,237.74 : 25,942,420.52 = 15,531,180.78 : x
  2. Step 2: Convert to fraction form
    18,781,237.74/25,942,420.52 = 15,531,180.78/x
  3. Step 3: Cross multiply
    18,781,237.74x = 25,942,420.52 × 15,531,180.78
  4. Step 4: Simplify right side
    18,781,237.74x = 402,916,422,837,189.50
  5. Step 5: Solve for x
    x = 402,916,422,837,189.50/18,781,237.74
  6. Step 6: Final answer
    x = 21,453,134.69

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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.