Home / 20,124.40-30,186.60-18,156.10

Finding the Fourth Proportional to 20,124.40, 30,186.60 and 18,156.10

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Solution

The fourth proportional to 20,124.40, 30,186.60 and 18,156.10 is: 27,234.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.40 : 30,186.60 = 18,156.10 : x
  2. Step 2: Convert to fraction form
    20,124.40/30,186.60 = 18,156.10/x
  3. Step 3: Cross multiply
    20,124.40x = 30,186.60 × 18,156.10
  4. Step 4: Simplify right side
    20,124.40x = 548,070,928.26
  5. Step 5: Solve for x
    x = 548,070,928.26/20,124.40
  6. Step 6: Final answer
    x = 27,234.15

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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.