Home / 20,919,496.38-31,287,461.87-18,630,134.30

Finding the Fourth Proportional to 20,919,496.38, 31,287,461.87 and 18,630,134.30

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Solution

The fourth proportional to 20,919,496.38, 31,287,461.87 and 18,630,134.30 is: 27,863,463.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919,496.38 : 31,287,461.87 = 18,630,134.30 : x
  2. Step 2: Convert to fraction form
    20,919,496.38/31,287,461.87 = 18,630,134.30/x
  3. Step 3: Cross multiply
    20,919,496.38x = 31,287,461.87 × 18,630,134.30
  4. Step 4: Simplify right side
    20,919,496.38x = 582,889,616,551,695.12
  5. Step 5: Solve for x
    x = 582,889,616,551,695.12/20,919,496.38
  6. Step 6: Final answer
    x = 27,863,463.15

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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.