Home / 13,719.02-18,932.81-8,345.07

Finding the Fourth Proportional to 13,719.02, 18,932.81 and 8,345.07

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Solution

The fourth proportional to 13,719.02, 18,932.81 and 8,345.07 is: 11,516.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.02 : 18,932.81 = 8,345.07 : x
  2. Step 2: Convert to fraction form
    13,719.02/18,932.81 = 8,345.07/x
  3. Step 3: Cross multiply
    13,719.02x = 18,932.81 × 8,345.07
  4. Step 4: Simplify right side
    13,719.02x = 157,995,583.02
  5. Step 5: Solve for x
    x = 157,995,583.02/13,719.02
  6. Step 6: Final answer
    x = 11,516.54

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1.5x scale

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.