Home / 19,919.56-27,487.44-11,421.58

Finding the Fourth Proportional to 19,919.56, 27,487.44 and 11,421.58

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Solution

The fourth proportional to 19,919.56, 27,487.44 and 11,421.58 is: 15,760.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.56 : 27,487.44 = 11,421.58 : x
  2. Step 2: Convert to fraction form
    19,919.56/27,487.44 = 11,421.58/x
  3. Step 3: Cross multiply
    19,919.56x = 27,487.44 × 11,421.58
  4. Step 4: Simplify right side
    19,919.56x = 313,949,994.96
  5. Step 5: Solve for x
    x = 313,949,994.96/19,919.56
  6. Step 6: Final answer
    x = 15,760.89

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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.