Home / 20,562.87-30,856.59-18,889.80

Finding the Fourth Proportional to 20,562.87, 30,856.59 and 18,889.80

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Solution

The fourth proportional to 20,562.87, 30,856.59 and 18,889.80 is: 28,345.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.87 : 30,856.59 = 18,889.80 : x
  2. Step 2: Convert to fraction form
    20,562.87/30,856.59 = 18,889.80/x
  3. Step 3: Cross multiply
    20,562.87x = 30,856.59 × 18,889.80
  4. Step 4: Simplify right side
    20,562.87x = 582,874,813.78
  5. Step 5: Solve for x
    x = 582,874,813.78/20,562.87
  6. Step 6: Final answer
    x = 28,345.99

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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.