Home / 20,204.68-30,320-9,810.76

Finding the Fourth Proportional to 20,204.68, 30,320 and 9,810.76

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Solution

The fourth proportional to 20,204.68, 30,320 and 9,810.76 is: 14,722.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,204.68 : 30,320 = 9,810.76 : x
  2. Step 2: Convert to fraction form
    20,204.68/30,320 = 9,810.76/x
  3. Step 3: Cross multiply
    20,204.68x = 30,320 × 9,810.76
  4. Step 4: Simplify right side
    20,204.68x = 297,462,243.20
  5. Step 5: Solve for x
    x = 297,462,243.20/20,204.68
  6. Step 6: Final answer
    x = 14,722.44

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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.