Home / 20,754,210.45-31,144,601.70-12,118,294.20

Finding the Fourth Proportional to 20,754,210.45, 31,144,601.70 and 12,118,294.20

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Solution

The fourth proportional to 20,754,210.45, 31,144,601.70 and 12,118,294.20 is: 18,185,198.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754,210.45 : 31,144,601.70 = 12,118,294.20 : x
  2. Step 2: Convert to fraction form
    20,754,210.45/31,144,601.70 = 12,118,294.20/x
  3. Step 3: Cross multiply
    20,754,210.45x = 31,144,601.70 × 12,118,294.20
  4. Step 4: Simplify right side
    20,754,210.45x = 377,419,446,142,420.12
  5. Step 5: Solve for x
    x = 377,419,446,142,420.12/20,754,210.45
  6. Step 6: Final answer
    x = 18,185,198.95

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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.