Home / 13,611,947.20-20,417,920.80-12,123,912.40

Finding the Fourth Proportional to 13,611,947.20, 20,417,920.80 and 12,123,912.40

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Solution

The fourth proportional to 13,611,947.20, 20,417,920.80 and 12,123,912.40 is: 18,185,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611,947.20 : 20,417,920.80 = 12,123,912.40 : x
  2. Step 2: Convert to fraction form
    13,611,947.20/20,417,920.80 = 12,123,912.40/x
  3. Step 3: Cross multiply
    13,611,947.20x = 20,417,920.80 × 12,123,912.40
  4. Step 4: Simplify right side
    13,611,947.20x = 247,545,083,169,337.94
  5. Step 5: Solve for x
    x = 247,545,083,169,337.94/13,611,947.20
  6. Step 6: Final answer
    x = 18,185,868.60

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1.5x scale

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.