Home / 21,065,182.80-31,597,774.20-19,422,891.60

Finding the Fourth Proportional to 21,065,182.80, 31,597,774.20 and 19,422,891.60

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Solution

The fourth proportional to 21,065,182.80, 31,597,774.20 and 19,422,891.60 is: 29,134,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065,182.80 : 31,597,774.20 = 19,422,891.60 : x
  2. Step 2: Convert to fraction form
    21,065,182.80/31,597,774.20 = 19,422,891.60/x
  3. Step 3: Cross multiply
    21,065,182.80x = 31,597,774.20 × 19,422,891.60
  4. Step 4: Simplify right side
    21,065,182.80x = 613,720,143,087,876.75
  5. Step 5: Solve for x
    x = 613,720,143,087,876.75/21,065,182.80
  6. Step 6: Final answer
    x = 29,134,337.40

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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.