Home / 12,840,816.30-17,720,125.26-7,039,645.74

Finding the Fourth Proportional to 12,840,816.30, 17,720,125.26 and 7,039,645.74

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Solution

The fourth proportional to 12,840,816.30, 17,720,125.26 and 7,039,645.74 is: 9,714,600.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840,816.30 : 17,720,125.26 = 7,039,645.74 : x
  2. Step 2: Convert to fraction form
    12,840,816.30/17,720,125.26 = 7,039,645.74/x
  3. Step 3: Cross multiply
    12,840,816.30x = 17,720,125.26 × 7,039,645.74
  4. Step 4: Simplify right side
    12,840,816.30x = 124,743,404,298,825.41
  5. Step 5: Solve for x
    x = 124,743,404,298,825.41/12,840,816.30
  6. Step 6: Final answer
    x = 9,714,600.80

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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.