Home / 12,580.29-17,360.31-6,991.65

Finding the Fourth Proportional to 12,580.29, 17,360.31 and 6,991.65

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Solution

The fourth proportional to 12,580.29, 17,360.31 and 6,991.65 is: 9,648.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,580.29 : 17,360.31 = 6,991.65 : x
  2. Step 2: Convert to fraction form
    12,580.29/17,360.31 = 6,991.65/x
  3. Step 3: Cross multiply
    12,580.29x = 17,360.31 × 6,991.65
  4. Step 4: Simplify right side
    12,580.29x = 121,377,211.41
  5. Step 5: Solve for x
    x = 121,377,211.41/12,580.29
  6. Step 6: Final answer
    x = 9,648.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.