Home / 20,986,707.11-31,456,181.10-12,771,229.76

Finding the Fourth Proportional to 20,986,707.11, 31,456,181.10 and 12,771,229.76

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Solution

The fourth proportional to 20,986,707.11, 31,456,181.10 and 12,771,229.76 is: 19,142,312.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986,707.11 : 31,456,181.10 = 12,771,229.76 : x
  2. Step 2: Convert to fraction form
    20,986,707.11/31,456,181.10 = 12,771,229.76/x
  3. Step 3: Cross multiply
    20,986,707.11x = 31,456,181.10 × 12,771,229.76
  4. Step 4: Simplify right side
    20,986,707.11x = 401,734,116,042,988.69
  5. Step 5: Solve for x
    x = 401,734,116,042,988.69/20,986,707.11
  6. Step 6: Final answer
    x = 19,142,312.99

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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.