Home / 20,188.68-30,279.42-6,145.29

Finding the Fourth Proportional to 20,188.68, 30,279.42 and 6,145.29

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Solution

The fourth proportional to 20,188.68, 30,279.42 and 6,145.29 is: 9,216.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.68 : 30,279.42 = 6,145.29 : x
  2. Step 2: Convert to fraction form
    20,188.68/30,279.42 = 6,145.29/x
  3. Step 3: Cross multiply
    20,188.68x = 30,279.42 × 6,145.29
  4. Step 4: Simplify right side
    20,188.68x = 186,075,816.93
  5. Step 5: Solve for x
    x = 186,075,816.93/20,188.68
  6. Step 6: Final answer
    x = 9,216.84

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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.