Home / 13,049.60-19,579.80-4,287.20

Finding the Fourth Proportional to 13,049.60, 19,579.80 and 4,287.20

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Solution

The fourth proportional to 13,049.60, 19,579.80 and 4,287.20 is: 6,432.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,049.60 : 19,579.80 = 4,287.20 : x
  2. Step 2: Convert to fraction form
    13,049.60/19,579.80 = 4,287.20/x
  3. Step 3: Cross multiply
    13,049.60x = 19,579.80 × 4,287.20
  4. Step 4: Simplify right side
    13,049.60x = 83,942,518.56
  5. Step 5: Solve for x
    x = 83,942,518.56/13,049.60
  6. Step 6: Final answer
    x = 6,432.57

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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.