Home / 25,917,672.80-38,876,509.20-20,878,824.80

Finding the Fourth Proportional to 25,917,672.80, 38,876,509.20 and 20,878,824.80

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Solution

The fourth proportional to 25,917,672.80, 38,876,509.20 and 20,878,824.80 is: 31,318,237.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,917,672.80 : 38,876,509.20 = 20,878,824.80 : x
  2. Step 2: Convert to fraction form
    25,917,672.80/38,876,509.20 = 20,878,824.80/x
  3. Step 3: Cross multiply
    25,917,672.80x = 38,876,509.20 × 20,878,824.80
  4. Step 4: Simplify right side
    25,917,672.80x = 811,695,824,422,388.25
  5. Step 5: Solve for x
    x = 811,695,824,422,388.25/25,917,672.80
  6. Step 6: Final answer
    x = 31,318,237.20

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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.