Home / 14,780.25-20,399.37-8,812.30

Finding the Fourth Proportional to 14,780.25, 20,399.37 and 8,812.30

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Solution

The fourth proportional to 14,780.25, 20,399.37 and 8,812.30 is: 12,162.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.25 : 20,399.37 = 8,812.30 : x
  2. Step 2: Convert to fraction form
    14,780.25/20,399.37 = 8,812.30/x
  3. Step 3: Cross multiply
    14,780.25x = 20,399.37 × 8,812.30
  4. Step 4: Simplify right side
    14,780.25x = 179,765,368.25
  5. Step 5: Solve for x
    x = 179,765,368.25/14,780.25
  6. Step 6: Final answer
    x = 12,162.54

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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.