Home / 18,711,562.80-28,067,344.20-12,653,135.40

Finding the Fourth Proportional to 18,711,562.80, 28,067,344.20 and 12,653,135.40

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Solution

The fourth proportional to 18,711,562.80, 28,067,344.20 and 12,653,135.40 is: 18,979,703.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711,562.80 : 28,067,344.20 = 12,653,135.40 : x
  2. Step 2: Convert to fraction form
    18,711,562.80/28,067,344.20 = 12,653,135.40/x
  3. Step 3: Cross multiply
    18,711,562.80x = 28,067,344.20 × 12,653,135.40
  4. Step 4: Simplify right side
    18,711,562.80x = 355,139,906,481,004.69
  5. Step 5: Solve for x
    x = 355,139,906,481,004.69/18,711,562.80
  6. Step 6: Final answer
    x = 18,979,703.10

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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.