Home / 21,114.14-29,138.10-11,683.34

Finding the Fourth Proportional to 21,114.14, 29,138.10 and 11,683.34

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Solution

The fourth proportional to 21,114.14, 29,138.10 and 11,683.34 is: 16,123.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.14 : 29,138.10 = 11,683.34 : x
  2. Step 2: Convert to fraction form
    21,114.14/29,138.10 = 11,683.34/x
  3. Step 3: Cross multiply
    21,114.14x = 29,138.10 × 11,683.34
  4. Step 4: Simplify right side
    21,114.14x = 340,430,329.25
  5. Step 5: Solve for x
    x = 340,430,329.25/21,114.14
  6. Step 6: Final answer
    x = 16,123.33

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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.