Home / 19,698.88-27,189.12-11,320.24

Finding the Fourth Proportional to 19,698.88, 27,189.12 and 11,320.24

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Solution

The fourth proportional to 19,698.88, 27,189.12 and 11,320.24 is: 15,624.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,698.88 : 27,189.12 = 11,320.24 : x
  2. Step 2: Convert to fraction form
    19,698.88/27,189.12 = 11,320.24/x
  3. Step 3: Cross multiply
    19,698.88x = 27,189.12 × 11,320.24
  4. Step 4: Simplify right side
    19,698.88x = 307,787,363.79
  5. Step 5: Solve for x
    x = 307,787,363.79/19,698.88
  6. Step 6: Final answer
    x = 15,624.61

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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.