Home / 20,736.65-28,617.33-11,785.65

Finding the Fourth Proportional to 20,736.65, 28,617.33 and 11,785.65

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Solution

The fourth proportional to 20,736.65, 28,617.33 and 11,785.65 is: 16,264.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.65 : 28,617.33 = 11,785.65 : x
  2. Step 2: Convert to fraction form
    20,736.65/28,617.33 = 11,785.65/x
  3. Step 3: Cross multiply
    20,736.65x = 28,617.33 × 11,785.65
  4. Step 4: Simplify right side
    20,736.65x = 337,273,835.31
  5. Step 5: Solve for x
    x = 337,273,835.31/20,736.65
  6. Step 6: Final answer
    x = 16,264.63

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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.