Home / 21,780,086.80-32,670,130.20-18,378,864.40

Finding the Fourth Proportional to 21,780,086.80, 32,670,130.20 and 18,378,864.40

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Solution

The fourth proportional to 21,780,086.80, 32,670,130.20 and 18,378,864.40 is: 27,568,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780,086.80 : 32,670,130.20 = 18,378,864.40 : x
  2. Step 2: Convert to fraction form
    21,780,086.80/32,670,130.20 = 18,378,864.40/x
  3. Step 3: Cross multiply
    21,780,086.80x = 32,670,130.20 × 18,378,864.40
  4. Step 4: Simplify right side
    21,780,086.80x = 600,439,892,876,144.88
  5. Step 5: Solve for x
    x = 600,439,892,876,144.88/21,780,086.80
  6. Step 6: Final answer
    x = 27,568,296.60

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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.