Home / 18,987,920.32-26,203,306.37-10,286,128.90

Finding the Fourth Proportional to 18,987,920.32, 26,203,306.37 and 10,286,128.90

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Solution

The fourth proportional to 18,987,920.32, 26,203,306.37 and 10,286,128.90 is: 14,194,845.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987,920.32 : 26,203,306.37 = 10,286,128.90 : x
  2. Step 2: Convert to fraction form
    18,987,920.32/26,203,306.37 = 10,286,128.90/x
  3. Step 3: Cross multiply
    18,987,920.32x = 26,203,306.37 × 10,286,128.90
  4. Step 4: Simplify right side
    18,987,920.32x = 269,530,586,928,011.12
  5. Step 5: Solve for x
    x = 269,530,586,928,011.12/18,987,920.32
  6. Step 6: Final answer
    x = 14,194,845.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.