Home / 20,980,695.16-28,945,679.07-12,714,794.38

Finding the Fourth Proportional to 20,980,695.16, 28,945,679.07 and 12,714,794.38

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Solution

The fourth proportional to 20,980,695.16, 28,945,679.07 and 12,714,794.38 is: 17,541,761.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980,695.16 : 28,945,679.07 = 12,714,794.38 : x
  2. Step 2: Convert to fraction form
    20,980,695.16/28,945,679.07 = 12,714,794.38/x
  3. Step 3: Cross multiply
    20,980,695.16x = 28,945,679.07 × 12,714,794.38
  4. Step 4: Simplify right side
    20,980,695.16x = 368,038,357,564,519.62
  5. Step 5: Solve for x
    x = 368,038,357,564,519.62/20,980,695.16
  6. Step 6: Final answer
    x = 17,541,761.83

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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.