Home / 28,340,016.80-42,510,025.20-9,172,711.40

Finding the Fourth Proportional to 28,340,016.80, 42,510,025.20 and 9,172,711.40

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Solution

The fourth proportional to 28,340,016.80, 42,510,025.20 and 9,172,711.40 is: 13,759,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,340,016.80 : 42,510,025.20 = 9,172,711.40 : x
  2. Step 2: Convert to fraction form
    28,340,016.80/42,510,025.20 = 9,172,711.40/x
  3. Step 3: Cross multiply
    28,340,016.80x = 42,510,025.20 × 9,172,711.40
  4. Step 4: Simplify right side
    28,340,016.80x = 389,932,192,766,327.31
  5. Step 5: Solve for x
    x = 389,932,192,766,327.31/28,340,016.80
  6. Step 6: Final answer
    x = 13,759,067.10

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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.