Home / 20,156.40-30,222.78-6,112.20

Finding the Fourth Proportional to 20,156.40, 30,222.78 and 6,112.20

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Solution

The fourth proportional to 20,156.40, 30,222.78 and 6,112.20 is: 9,164.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.40 : 30,222.78 = 6,112.20 : x
  2. Step 2: Convert to fraction form
    20,156.40/30,222.78 = 6,112.20/x
  3. Step 3: Cross multiply
    20,156.40x = 30,222.78 × 6,112.20
  4. Step 4: Simplify right side
    20,156.40x = 184,727,675.92
  5. Step 5: Solve for x
    x = 184,727,675.92/20,156.40
  6. Step 6: Final answer
    x = 9,164.72

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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.