Home / 25,638.16-38,391.36-21,242.56

Finding the Fourth Proportional to 25,638.16, 38,391.36 and 21,242.56

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Solution

The fourth proportional to 25,638.16, 38,391.36 and 21,242.56 is: 31,809.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,638.16 : 38,391.36 = 21,242.56 : x
  2. Step 2: Convert to fraction form
    25,638.16/38,391.36 = 21,242.56/x
  3. Step 3: Cross multiply
    25,638.16x = 38,391.36 × 21,242.56
  4. Step 4: Simplify right side
    25,638.16x = 815,530,768.28
  5. Step 5: Solve for x
    x = 815,530,768.28/25,638.16
  6. Step 6: Final answer
    x = 31,809.25

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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.