Home / 19,291.44-28,939.28-6,139.20

Finding the Fourth Proportional to 19,291.44, 28,939.28 and 6,139.20

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Solution

The fourth proportional to 19,291.44, 28,939.28 and 6,139.20 is: 9,209.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,291.44 : 28,939.28 = 6,139.20 : x
  2. Step 2: Convert to fraction form
    19,291.44/28,939.28 = 6,139.20/x
  3. Step 3: Cross multiply
    19,291.44x = 28,939.28 × 6,139.20
  4. Step 4: Simplify right side
    19,291.44x = 177,664,027.78
  5. Step 5: Solve for x
    x = 177,664,027.78/19,291.44
  6. Step 6: Final answer
    x = 9,209.47

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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.