Home / 13,940.48-20,921.13-8,683.16

Finding the Fourth Proportional to 13,940.48, 20,921.13 and 8,683.16

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Solution

The fourth proportional to 13,940.48, 20,921.13 and 8,683.16 is: 13,031.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.48 : 20,921.13 = 8,683.16 : x
  2. Step 2: Convert to fraction form
    13,940.48/20,921.13 = 8,683.16/x
  3. Step 3: Cross multiply
    13,940.48x = 20,921.13 × 8,683.16
  4. Step 4: Simplify right side
    13,940.48x = 181,661,519.17
  5. Step 5: Solve for x
    x = 181,661,519.17/13,940.48
  6. Step 6: Final answer
    x = 13,031.22

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1.5x scale

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.