Home / 12,947,228.80-19,420,843.20-7,908,380.80

Finding the Fourth Proportional to 12,947,228.80, 19,420,843.20 and 7,908,380.80

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Solution

The fourth proportional to 12,947,228.80, 19,420,843.20 and 7,908,380.80 is: 11,862,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947,228.80 : 19,420,843.20 = 7,908,380.80 : x
  2. Step 2: Convert to fraction form
    12,947,228.80/19,420,843.20 = 7,908,380.80/x
  3. Step 3: Cross multiply
    12,947,228.80x = 19,420,843.20 × 7,908,380.80
  4. Step 4: Simplify right side
    12,947,228.80x = 153,587,423,482,690.56
  5. Step 5: Solve for x
    x = 153,587,423,482,690.56/12,947,228.80
  6. Step 6: Final answer
    x = 11,862,571.20

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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.