Home / 20,558.79-30,840.12-5,767.65

Finding the Fourth Proportional to 20,558.79, 30,840.12 and 5,767.65

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Solution

The fourth proportional to 20,558.79, 30,840.12 and 5,767.65 is: 8,652.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.79 : 30,840.12 = 5,767.65 : x
  2. Step 2: Convert to fraction form
    20,558.79/30,840.12 = 5,767.65/x
  3. Step 3: Cross multiply
    20,558.79x = 30,840.12 × 5,767.65
  4. Step 4: Simplify right side
    20,558.79x = 177,875,018.12
  5. Step 5: Solve for x
    x = 177,875,018.12/20,558.79
  6. Step 6: Final answer
    x = 8,652.02

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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.