Home / 20,018.50-30,027.75-5,426.50

Finding the Fourth Proportional to 20,018.50, 30,027.75 and 5,426.50

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Solution

The fourth proportional to 20,018.50, 30,027.75 and 5,426.50 is: 8,139.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.50 : 30,027.75 = 5,426.50 : x
  2. Step 2: Convert to fraction form
    20,018.50/30,027.75 = 5,426.50/x
  3. Step 3: Cross multiply
    20,018.50x = 30,027.75 × 5,426.50
  4. Step 4: Simplify right side
    20,018.50x = 162,945,585.38
  5. Step 5: Solve for x
    x = 162,945,585.38/20,018.50
  6. Step 6: Final answer
    x = 8,139.75

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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.