Home / 20,794,617.60-31,194,010.80-7,145,966.40

Finding the Fourth Proportional to 20,794,617.60, 31,194,010.80 and 7,145,966.40

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Solution

The fourth proportional to 20,794,617.60, 31,194,010.80 and 7,145,966.40 is: 10,719,665.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794,617.60 : 31,194,010.80 = 7,145,966.40 : x
  2. Step 2: Convert to fraction form
    20,794,617.60/31,194,010.80 = 7,145,966.40/x
  3. Step 3: Cross multiply
    20,794,617.60x = 31,194,010.80 × 7,145,966.40
  4. Step 4: Simplify right side
    20,794,617.60x = 222,911,353,058,037.12
  5. Step 5: Solve for x
    x = 222,911,353,058,037.12/20,794,617.60
  6. Step 6: Final answer
    x = 10,719,665.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.