Home / 21,283.53-29,356.34-18,445.92

Finding the Fourth Proportional to 21,283.53, 29,356.34 and 18,445.92

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Solution

The fourth proportional to 21,283.53, 29,356.34 and 18,445.92 is: 25,442.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.53 : 29,356.34 = 18,445.92 : x
  2. Step 2: Convert to fraction form
    21,283.53/29,356.34 = 18,445.92/x
  3. Step 3: Cross multiply
    21,283.53x = 29,356.34 × 18,445.92
  4. Step 4: Simplify right side
    21,283.53x = 541,504,606.90
  5. Step 5: Solve for x
    x = 541,504,606.90/21,283.53
  6. Step 6: Final answer
    x = 25,442.42

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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.