Home / 20,488,639.74-28,274,313.51-11,321,202.30

Finding the Fourth Proportional to 20,488,639.74, 28,274,313.51 and 11,321,202.30

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Solution

The fourth proportional to 20,488,639.74, 28,274,313.51 and 11,321,202.30 is: 15,623,254.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488,639.74 : 28,274,313.51 = 11,321,202.30 : x
  2. Step 2: Convert to fraction form
    20,488,639.74/28,274,313.51 = 11,321,202.30/x
  3. Step 3: Cross multiply
    20,488,639.74x = 28,274,313.51 × 11,321,202.30
  4. Step 4: Simplify right side
    20,488,639.74x = 320,099,223,140,333.12
  5. Step 5: Solve for x
    x = 320,099,223,140,333.12/20,488,639.74
  6. Step 6: Final answer
    x = 15,623,254.02

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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.