Home / 20,146.26-30,222.51-10,280.19

Finding the Fourth Proportional to 20,146.26, 30,222.51 and 10,280.19

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Solution

The fourth proportional to 20,146.26, 30,222.51 and 10,280.19 is: 15,421.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146.26 : 30,222.51 = 10,280.19 : x
  2. Step 2: Convert to fraction form
    20,146.26/30,222.51 = 10,280.19/x
  3. Step 3: Cross multiply
    20,146.26x = 30,222.51 × 10,280.19
  4. Step 4: Simplify right side
    20,146.26x = 310,693,145.08
  5. Step 5: Solve for x
    x = 310,693,145.08/20,146.26
  6. Step 6: Final answer
    x = 15,421.88

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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.