Home / 18,764.60-28,137.40-6,280.16

Finding the Fourth Proportional to 18,764.60, 28,137.40 and 6,280.16

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Solution

The fourth proportional to 18,764.60, 28,137.40 and 6,280.16 is: 9,417.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.60 : 28,137.40 = 6,280.16 : x
  2. Step 2: Convert to fraction form
    18,764.60/28,137.40 = 6,280.16/x
  3. Step 3: Cross multiply
    18,764.60x = 28,137.40 × 6,280.16
  4. Step 4: Simplify right side
    18,764.60x = 176,707,217.60
  5. Step 5: Solve for x
    x = 176,707,217.60/18,764.60
  6. Step 6: Final answer
    x = 9,417.05

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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.