Home / 12,949,143.45-17,869,755.65-7,147,874.44

Finding the Fourth Proportional to 12,949,143.45, 17,869,755.65 and 7,147,874.44

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Solution

The fourth proportional to 12,949,143.45, 17,869,755.65 and 7,147,874.44 is: 9,864,032.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,949,143.45 : 17,869,755.65 = 7,147,874.44 : x
  2. Step 2: Convert to fraction form
    12,949,143.45/17,869,755.65 = 7,147,874.44/x
  3. Step 3: Cross multiply
    12,949,143.45x = 17,869,755.65 × 7,147,874.44
  4. Step 4: Simplify right side
    12,949,143.45x = 127,730,769,686,485.22
  5. Step 5: Solve for x
    x = 127,730,769,686,485.22/12,949,143.45
  6. Step 6: Final answer
    x = 9,864,032.34

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1.5x scale

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.