Home / 19,219.36-28,827.89-7,378.79

Finding the Fourth Proportional to 19,219.36, 28,827.89 and 7,378.79

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Solution

The fourth proportional to 19,219.36, 28,827.89 and 7,378.79 is: 11,067.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,219.36 : 28,827.89 = 7,378.79 : x
  2. Step 2: Convert to fraction form
    19,219.36/28,827.89 = 7,378.79/x
  3. Step 3: Cross multiply
    19,219.36x = 28,827.89 × 7,378.79
  4. Step 4: Simplify right side
    19,219.36x = 212,714,909.56
  5. Step 5: Solve for x
    x = 212,714,909.56/19,219.36
  6. Step 6: Final answer
    x = 11,067.74

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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.