Home / 20,869.92-31,283-9,767.26

Finding the Fourth Proportional to 20,869.92, 31,283 and 9,767.26

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Solution

The fourth proportional to 20,869.92, 31,283 and 9,767.26 is: 14,640.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869.92 : 31,283 = 9,767.26 : x
  2. Step 2: Convert to fraction form
    20,869.92/31,283 = 9,767.26/x
  3. Step 3: Cross multiply
    20,869.92x = 31,283 × 9,767.26
  4. Step 4: Simplify right side
    20,869.92x = 305,549,194.58
  5. Step 5: Solve for x
    x = 305,549,194.58/20,869.92
  6. Step 6: Final answer
    x = 14,640.65

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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.