Home / 12,913,126.35-17,820,920.28-7,111,906.56

Finding the Fourth Proportional to 12,913,126.35, 17,820,920.28 and 7,111,906.56

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Solution

The fourth proportional to 12,913,126.35, 17,820,920.28 and 7,111,906.56 is: 9,814,874.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913,126.35 : 17,820,920.28 = 7,111,906.56 : x
  2. Step 2: Convert to fraction form
    12,913,126.35/17,820,920.28 = 7,111,906.56/x
  3. Step 3: Cross multiply
    12,913,126.35x = 17,820,920.28 × 7,111,906.56
  4. Step 4: Simplify right side
    12,913,126.35x = 126,740,719,844,569.03
  5. Step 5: Solve for x
    x = 126,740,719,844,569.03/12,913,126.35
  6. Step 6: Final answer
    x = 9,814,874.91

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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.