Home / 14,694.75-20,278.65-7,980.33

Finding the Fourth Proportional to 14,694.75, 20,278.65 and 7,980.33

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Solution

The fourth proportional to 14,694.75, 20,278.65 and 7,980.33 is: 11,012.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,694.75 : 20,278.65 = 7,980.33 : x
  2. Step 2: Convert to fraction form
    14,694.75/20,278.65 = 7,980.33/x
  3. Step 3: Cross multiply
    14,694.75x = 20,278.65 × 7,980.33
  4. Step 4: Simplify right side
    14,694.75x = 161,830,318.95
  5. Step 5: Solve for x
    x = 161,830,318.95/14,694.75
  6. Step 6: Final answer
    x = 11,012.80

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Half scale
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Double scale
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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.