Home / 20,749,246.80-31,123,870.20-9,963,946.95

Finding the Fourth Proportional to 20,749,246.80, 31,123,870.20 and 9,963,946.95

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Solution

The fourth proportional to 20,749,246.80, 31,123,870.20 and 9,963,946.95 is: 14,945,920.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749,246.80 : 31,123,870.20 = 9,963,946.95 : x
  2. Step 2: Convert to fraction form
    20,749,246.80/31,123,870.20 = 9,963,946.95/x
  3. Step 3: Cross multiply
    20,749,246.80x = 31,123,870.20 × 9,963,946.95
  4. Step 4: Simplify right side
    20,749,246.80x = 310,116,591,551,485.88
  5. Step 5: Solve for x
    x = 310,116,591,551,485.88/20,749,246.80
  6. Step 6: Final answer
    x = 14,945,920.43

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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.