Home / 12,949,143.92-17,869,756.30-7,147,874.91

Finding the Fourth Proportional to 12,949,143.92, 17,869,756.30 and 7,147,874.91

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Solution

The fourth proportional to 12,949,143.92, 17,869,756.30 and 7,147,874.91 is: 9,864,032.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,949,143.92 : 17,869,756.30 = 7,147,874.91 : x
  2. Step 2: Convert to fraction form
    12,949,143.92/17,869,756.30 = 7,147,874.91/x
  3. Step 3: Cross multiply
    12,949,143.92x = 17,869,756.30 × 7,147,874.91
  4. Step 4: Simplify right side
    12,949,143.92x = 127,730,782,686,714.75
  5. Step 5: Solve for x
    x = 127,730,782,686,714.75/12,949,143.92
  6. Step 6: Final answer
    x = 9,864,032.98

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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.