Home / 20,509.66-30,774.22-12,206.08

Finding the Fourth Proportional to 20,509.66, 30,774.22 and 12,206.08

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Solution

The fourth proportional to 20,509.66, 30,774.22 and 12,206.08 is: 18,314.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509.66 : 30,774.22 = 12,206.08 : x
  2. Step 2: Convert to fraction form
    20,509.66/30,774.22 = 12,206.08/x
  3. Step 3: Cross multiply
    20,509.66x = 30,774.22 × 12,206.08
  4. Step 4: Simplify right side
    20,509.66x = 375,632,591.26
  5. Step 5: Solve for x
    x = 375,632,591.26/20,509.66
  6. Step 6: Final answer
    x = 18,314.91

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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.