Home / 20,146.40-30,224.80-7,666.64

Finding the Fourth Proportional to 20,146.40, 30,224.80 and 7,666.64

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Solution

The fourth proportional to 20,146.40, 30,224.80 and 7,666.64 is: 11,501.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146.40 : 30,224.80 = 7,666.64 : x
  2. Step 2: Convert to fraction form
    20,146.40/30,224.80 = 7,666.64/x
  3. Step 3: Cross multiply
    20,146.40x = 30,224.80 × 7,666.64
  4. Step 4: Simplify right side
    20,146.40x = 231,722,660.67
  5. Step 5: Solve for x
    x = 231,722,660.67/20,146.40
  6. Step 6: Final answer
    x = 11,501.94

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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.