Home / 20,004.78-30,025.35-10,652.61

Finding the Fourth Proportional to 20,004.78, 30,025.35 and 10,652.61

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Solution

The fourth proportional to 20,004.78, 30,025.35 and 10,652.61 is: 15,988.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,004.78 : 30,025.35 = 10,652.61 : x
  2. Step 2: Convert to fraction form
    20,004.78/30,025.35 = 10,652.61/x
  3. Step 3: Cross multiply
    20,004.78x = 30,025.35 × 10,652.61
  4. Step 4: Simplify right side
    20,004.78x = 319,848,343.66
  5. Step 5: Solve for x
    x = 319,848,343.66/20,004.78
  6. Step 6: Final answer
    x = 15,988.60

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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.