Home / 20,858,080.80-31,287,121.20-19,346,426.40

Finding the Fourth Proportional to 20,858,080.80, 31,287,121.20 and 19,346,426.40

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Solution

The fourth proportional to 20,858,080.80, 31,287,121.20 and 19,346,426.40 is: 29,019,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858,080.80 : 31,287,121.20 = 19,346,426.40 : x
  2. Step 2: Convert to fraction form
    20,858,080.80/31,287,121.20 = 19,346,426.40/x
  3. Step 3: Cross multiply
    20,858,080.80x = 31,287,121.20 × 19,346,426.40
  4. Step 4: Simplify right side
    20,858,080.80x = 605,293,987,563,679.62
  5. Step 5: Solve for x
    x = 605,293,987,563,679.62/20,858,080.80
  6. Step 6: Final answer
    x = 29,019,639.60

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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.