Home / 20,365.66-30,539.30-7,215.04

Finding the Fourth Proportional to 20,365.66, 30,539.30 and 7,215.04

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Solution

The fourth proportional to 20,365.66, 30,539.30 and 7,215.04 is: 10,819.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.66 : 30,539.30 = 7,215.04 : x
  2. Step 2: Convert to fraction form
    20,365.66/30,539.30 = 7,215.04/x
  3. Step 3: Cross multiply
    20,365.66x = 30,539.30 × 7,215.04
  4. Step 4: Simplify right side
    20,365.66x = 220,342,118.38
  5. Step 5: Solve for x
    x = 220,342,118.38/20,365.66
  6. Step 6: Final answer
    x = 10,819.30

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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.