Home / 19,286.20-28,929.30-5,435.20

Finding the Fourth Proportional to 19,286.20, 28,929.30 and 5,435.20

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Solution

The fourth proportional to 19,286.20, 28,929.30 and 5,435.20 is: 8,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.20 : 28,929.30 = 5,435.20 : x
  2. Step 2: Convert to fraction form
    19,286.20/28,929.30 = 5,435.20/x
  3. Step 3: Cross multiply
    19,286.20x = 28,929.30 × 5,435.20
  4. Step 4: Simplify right side
    19,286.20x = 157,236,531.36
  5. Step 5: Solve for x
    x = 157,236,531.36/19,286.20
  6. Step 6: Final answer
    x = 8,152.80

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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.