Home / 13,689.02-20,541.68-5,791.11

Finding the Fourth Proportional to 13,689.02, 20,541.68 and 5,791.11

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Solution

The fourth proportional to 13,689.02, 20,541.68 and 5,791.11 is: 8,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.02 : 20,541.68 = 5,791.11 : x
  2. Step 2: Convert to fraction form
    13,689.02/20,541.68 = 5,791.11/x
  3. Step 3: Cross multiply
    13,689.02x = 20,541.68 × 5,791.11
  4. Step 4: Simplify right side
    13,689.02x = 118,959,099.51
  5. Step 5: Solve for x
    x = 118,959,099.51/13,689.02
  6. Step 6: Final answer
    x = 8,690.11

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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.