Home / 20,608.12-28,439.70-12,224.68

Finding the Fourth Proportional to 20,608.12, 28,439.70 and 12,224.68

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Solution

The fourth proportional to 20,608.12, 28,439.70 and 12,224.68 is: 16,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,608.12 : 28,439.70 = 12,224.68 : x
  2. Step 2: Convert to fraction form
    20,608.12/28,439.70 = 12,224.68/x
  3. Step 3: Cross multiply
    20,608.12x = 28,439.70 × 12,224.68
  4. Step 4: Simplify right side
    20,608.12x = 347,666,231.80
  5. Step 5: Solve for x
    x = 347,666,231.80/20,608.12
  6. Step 6: Final answer
    x = 16,870.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.