Home / 19,190.08-28,785.12-5,339.20

Finding the Fourth Proportional to 19,190.08, 28,785.12 and 5,339.20

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Solution

The fourth proportional to 19,190.08, 28,785.12 and 5,339.20 is: 8,008.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,190.08 : 28,785.12 = 5,339.20 : x
  2. Step 2: Convert to fraction form
    19,190.08/28,785.12 = 5,339.20/x
  3. Step 3: Cross multiply
    19,190.08x = 28,785.12 × 5,339.20
  4. Step 4: Simplify right side
    19,190.08x = 153,689,512.70
  5. Step 5: Solve for x
    x = 153,689,512.70/19,190.08
  6. Step 6: Final answer
    x = 8,008.80

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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.