Home / 42,210.57-63,317.97-12,628.65

Finding the Fourth Proportional to 42,210.57, 63,317.97 and 12,628.65

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Solution

The fourth proportional to 42,210.57, 63,317.97 and 12,628.65 is: 18,943.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,210.57 : 63,317.97 = 12,628.65 : x
  2. Step 2: Convert to fraction form
    42,210.57/63,317.97 = 12,628.65/x
  3. Step 3: Cross multiply
    42,210.57x = 63,317.97 × 12,628.65
  4. Step 4: Simplify right side
    42,210.57x = 799,620,481.84
  5. Step 5: Solve for x
    x = 799,620,481.84/42,210.57
  6. Step 6: Final answer
    x = 18,943.61

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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.