Home / 20,402.24-30,574.56-8,711.36

Finding the Fourth Proportional to 20,402.24, 30,574.56 and 8,711.36

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Solution

The fourth proportional to 20,402.24, 30,574.56 and 8,711.36 is: 13,054.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.24 : 30,574.56 = 8,711.36 : x
  2. Step 2: Convert to fraction form
    20,402.24/30,574.56 = 8,711.36/x
  3. Step 3: Cross multiply
    20,402.24x = 30,574.56 × 8,711.36
  4. Step 4: Simplify right side
    20,402.24x = 266,345,999.00
  5. Step 5: Solve for x
    x = 266,345,999.00/20,402.24
  6. Step 6: Final answer
    x = 13,054.74

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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.