Home / 12,289.54-18,432.28-5,270.69

Finding the Fourth Proportional to 12,289.54, 18,432.28 and 5,270.69

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Solution

The fourth proportional to 12,289.54, 18,432.28 and 5,270.69 is: 7,905.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.54 : 18,432.28 = 5,270.69 : x
  2. Step 2: Convert to fraction form
    12,289.54/18,432.28 = 5,270.69/x
  3. Step 3: Cross multiply
    12,289.54x = 18,432.28 × 5,270.69
  4. Step 4: Simplify right side
    12,289.54x = 97,150,748.30
  5. Step 5: Solve for x
    x = 97,150,748.30/12,289.54
  6. Step 6: Final answer
    x = 7,905.16

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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.