Home / 12,954.24-19,432.08-3,720

Finding the Fourth Proportional to 12,954.24, 19,432.08 and 3,720

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Solution

The fourth proportional to 12,954.24, 19,432.08 and 3,720 is: 5,580.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,954.24 : 19,432.08 = 3,720 : x
  2. Step 2: Convert to fraction form
    12,954.24/19,432.08 = 3,720/x
  3. Step 3: Cross multiply
    12,954.24x = 19,432.08 × 3,720
  4. Step 4: Simplify right side
    12,954.24x = 72,287,337.60
  5. Step 5: Solve for x
    x = 72,287,337.60/12,954.24
  6. Step 6: Final answer
    x = 5,580.21

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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.