Home / 20,126,101.80-30,189,152.70-19,086,839.40

Finding the Fourth Proportional to 20,126,101.80, 30,189,152.70 and 19,086,839.40

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Solution

The fourth proportional to 20,126,101.80, 30,189,152.70 and 19,086,839.40 is: 28,630,259.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126,101.80 : 30,189,152.70 = 19,086,839.40 : x
  2. Step 2: Convert to fraction form
    20,126,101.80/30,189,152.70 = 19,086,839.40/x
  3. Step 3: Cross multiply
    20,126,101.80x = 30,189,152.70 × 19,086,839.40
  4. Step 4: Simplify right side
    20,126,101.80x = 576,215,509,206,976.38
  5. Step 5: Solve for x
    x = 576,215,509,206,976.38/20,126,101.80
  6. Step 6: Final answer
    x = 28,630,259.10

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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.