Home / 15,030-20,740.62-8,222.70

Finding the Fourth Proportional to 15,030, 20,740.62 and 8,222.70

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Solution

The fourth proportional to 15,030, 20,740.62 and 8,222.70 is: 11,346.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030 : 20,740.62 = 8,222.70 : x
  2. Step 2: Convert to fraction form
    15,030/20,740.62 = 8,222.70/x
  3. Step 3: Cross multiply
    15,030x = 20,740.62 × 8,222.70
  4. Step 4: Simplify right side
    15,030x = 170,543,896.07
  5. Step 5: Solve for x
    x = 170,543,896.07/15,030
  6. Step 6: Final answer
    x = 11,346.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.