Home / 21,022,156.80-31,533,235.20-18,630,672.30

Finding the Fourth Proportional to 21,022,156.80, 31,533,235.20 and 18,630,672.30

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Solution

The fourth proportional to 21,022,156.80, 31,533,235.20 and 18,630,672.30 is: 27,946,008.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022,156.80 : 31,533,235.20 = 18,630,672.30 : x
  2. Step 2: Convert to fraction form
    21,022,156.80/31,533,235.20 = 18,630,672.30/x
  3. Step 3: Cross multiply
    21,022,156.80x = 31,533,235.20 × 18,630,672.30
  4. Step 4: Simplify right side
    21,022,156.80x = 587,485,371,570,025
  5. Step 5: Solve for x
    x = 587,485,371,570,025/21,022,156.80
  6. Step 6: Final answer
    x = 27,946,008.45

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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.