Home / 13,719.02-20,578.47-3,330.77

Finding the Fourth Proportional to 13,719.02, 20,578.47 and 3,330.77

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Solution

The fourth proportional to 13,719.02, 20,578.47 and 3,330.77 is: 4,996.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.02 : 20,578.47 = 3,330.77 : x
  2. Step 2: Convert to fraction form
    13,719.02/20,578.47 = 3,330.77/x
  3. Step 3: Cross multiply
    13,719.02x = 20,578.47 × 3,330.77
  4. Step 4: Simplify right side
    13,719.02x = 68,542,047.63
  5. Step 5: Solve for x
    x = 68,542,047.63/13,719.02
  6. Step 6: Final answer
    x = 4,996.13

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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.