Home / 20,799.70-31,180.83-7,643.14

Finding the Fourth Proportional to 20,799.70, 31,180.83 and 7,643.14

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Solution

The fourth proportional to 20,799.70, 31,180.83 and 7,643.14 is: 11,457.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.70 : 31,180.83 = 7,643.14 : x
  2. Step 2: Convert to fraction form
    20,799.70/31,180.83 = 7,643.14/x
  3. Step 3: Cross multiply
    20,799.70x = 31,180.83 × 7,643.14
  4. Step 4: Simplify right side
    20,799.70x = 238,319,449.01
  5. Step 5: Solve for x
    x = 238,319,449.01/20,799.70
  6. Step 6: Final answer
    x = 11,457.83

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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.