Home / 21,430.30-29,584.92-13,366.48

Finding the Fourth Proportional to 21,430.30, 29,584.92 and 13,366.48

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Solution

The fourth proportional to 21,430.30, 29,584.92 and 13,366.48 is: 18,452.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.30 : 29,584.92 = 13,366.48 : x
  2. Step 2: Convert to fraction form
    21,430.30/29,584.92 = 13,366.48/x
  3. Step 3: Cross multiply
    21,430.30x = 29,584.92 × 13,366.48
  4. Step 4: Simplify right side
    21,430.30x = 395,446,241.48
  5. Step 5: Solve for x
    x = 395,446,241.48/21,430.30
  6. Step 6: Final answer
    x = 18,452.67

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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.