Home / 20,125.13-30,187.62-8,270.64

Finding the Fourth Proportional to 20,125.13, 30,187.62 and 8,270.64

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Solution

The fourth proportional to 20,125.13, 30,187.62 and 8,270.64 is: 12,405.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.13 : 30,187.62 = 8,270.64 : x
  2. Step 2: Convert to fraction form
    20,125.13/30,187.62 = 8,270.64/x
  3. Step 3: Cross multiply
    20,125.13x = 30,187.62 × 8,270.64
  4. Step 4: Simplify right side
    20,125.13x = 249,670,937.48
  5. Step 5: Solve for x
    x = 249,670,937.48/20,125.13
  6. Step 6: Final answer
    x = 12,405.93

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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.