Home / 21,242.87-29,313.63-11,683.42

Finding the Fourth Proportional to 21,242.87, 29,313.63 and 11,683.42

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Solution

The fourth proportional to 21,242.87, 29,313.63 and 11,683.42 is: 16,122.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.87 : 29,313.63 = 11,683.42 : x
  2. Step 2: Convert to fraction form
    21,242.87/29,313.63 = 11,683.42/x
  3. Step 3: Cross multiply
    21,242.87x = 29,313.63 × 11,683.42
  4. Step 4: Simplify right side
    21,242.87x = 342,483,377.73
  5. Step 5: Solve for x
    x = 342,483,377.73/21,242.87
  6. Step 6: Final answer
    x = 16,122.28

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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.