Home / 20,365.46-30,543.79-7,218.26

Finding the Fourth Proportional to 20,365.46, 30,543.79 and 7,218.26

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Solution

The fourth proportional to 20,365.46, 30,543.79 and 7,218.26 is: 10,825.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.46 : 30,543.79 = 7,218.26 : x
  2. Step 2: Convert to fraction form
    20,365.46/30,543.79 = 7,218.26/x
  3. Step 3: Cross multiply
    20,365.46x = 30,543.79 × 7,218.26
  4. Step 4: Simplify right side
    20,365.46x = 220,473,017.61
  5. Step 5: Solve for x
    x = 220,473,017.61/20,365.46
  6. Step 6: Final answer
    x = 10,825.83

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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.