Home / 12,887,812.47-17,785,820.22-7,994,610.84

Finding the Fourth Proportional to 12,887,812.47, 17,785,820.22 and 7,994,610.84

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Solution

The fourth proportional to 12,887,812.47, 17,785,820.22 and 7,994,610.84 is: 11,032,959.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887,812.47 : 17,785,820.22 = 7,994,610.84 : x
  2. Step 2: Convert to fraction form
    12,887,812.47/17,785,820.22 = 7,994,610.84/x
  3. Step 3: Cross multiply
    12,887,812.47x = 17,785,820.22 × 7,994,610.84
  4. Step 4: Simplify right side
    12,887,812.47x = 142,190,711,129,103.19
  5. Step 5: Solve for x
    x = 142,190,711,129,103.19/12,887,812.47
  6. Step 6: Final answer
    x = 11,032,959.35

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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.