Home / 20,631.02-30,927.69-7,480.46

Finding the Fourth Proportional to 20,631.02, 30,927.69 and 7,480.46

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Solution

The fourth proportional to 20,631.02, 30,927.69 and 7,480.46 is: 11,213.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.02 : 30,927.69 = 7,480.46 : x
  2. Step 2: Convert to fraction form
    20,631.02/30,927.69 = 7,480.46/x
  3. Step 3: Cross multiply
    20,631.02x = 30,927.69 × 7,480.46
  4. Step 4: Simplify right side
    20,631.02x = 231,353,425.26
  5. Step 5: Solve for x
    x = 231,353,425.26/20,631.02
  6. Step 6: Final answer
    x = 11,213.87

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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.