Home / 21,194,836.20-31,796,774.10-12,101,290.20

Finding the Fourth Proportional to 21,194,836.20, 31,796,774.10 and 12,101,290.20

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Solution

The fourth proportional to 21,194,836.20, 31,796,774.10 and 12,101,290.20 is: 18,154,515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,194,836.20 : 31,796,774.10 = 12,101,290.20 : x
  2. Step 2: Convert to fraction form
    21,194,836.20/31,796,774.10 = 12,101,290.20/x
  3. Step 3: Cross multiply
    21,194,836.20x = 31,796,774.10 × 12,101,290.20
  4. Step 4: Simplify right side
    21,194,836.20x = 384,781,990,807,943.81
  5. Step 5: Solve for x
    x = 384,781,990,807,943.81/21,194,836.20
  6. Step 6: Final answer
    x = 18,154,515.90

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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.