Home / 18,955.20-28,429.60-5,100.96

Finding the Fourth Proportional to 18,955.20, 28,429.60 and 5,100.96

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Solution

The fourth proportional to 18,955.20, 28,429.60 and 5,100.96 is: 7,650.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,955.20 : 28,429.60 = 5,100.96 : x
  2. Step 2: Convert to fraction form
    18,955.20/28,429.60 = 5,100.96/x
  3. Step 3: Cross multiply
    18,955.20x = 28,429.60 × 5,100.96
  4. Step 4: Simplify right side
    18,955.20x = 145,018,252.42
  5. Step 5: Solve for x
    x = 145,018,252.42/18,955.20
  6. Step 6: Final answer
    x = 7,650.58

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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.