Home / 20,345.30-30,539.52-18,020.39

Finding the Fourth Proportional to 20,345.30, 30,539.52 and 18,020.39

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Solution

The fourth proportional to 20,345.30, 30,539.52 and 18,020.39 is: 27,049.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.30 : 30,539.52 = 18,020.39 : x
  2. Step 2: Convert to fraction form
    20,345.30/30,539.52 = 18,020.39/x
  3. Step 3: Cross multiply
    20,345.30x = 30,539.52 × 18,020.39
  4. Step 4: Simplify right side
    20,345.30x = 550,334,060.81
  5. Step 5: Solve for x
    x = 550,334,060.81/20,345.30
  6. Step 6: Final answer
    x = 27,049.69

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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.