Home / 12,508.65-18,763.32-4,187.12

Finding the Fourth Proportional to 12,508.65, 18,763.32 and 4,187.12

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Solution

The fourth proportional to 12,508.65, 18,763.32 and 4,187.12 is: 6,280.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.65 : 18,763.32 = 4,187.12 : x
  2. Step 2: Convert to fraction form
    12,508.65/18,763.32 = 4,187.12/x
  3. Step 3: Cross multiply
    12,508.65x = 18,763.32 × 4,187.12
  4. Step 4: Simplify right side
    12,508.65x = 78,564,235.32
  5. Step 5: Solve for x
    x = 78,564,235.32/12,508.65
  6. Step 6: Final answer
    x = 6,280.79

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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.