Home / 20,490.30-30,735.45-14,615.10

Finding the Fourth Proportional to 20,490.30, 30,735.45 and 14,615.10

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Solution

The fourth proportional to 20,490.30, 30,735.45 and 14,615.10 is: 21,922.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.30 : 30,735.45 = 14,615.10 : x
  2. Step 2: Convert to fraction form
    20,490.30/30,735.45 = 14,615.10/x
  3. Step 3: Cross multiply
    20,490.30x = 30,735.45 × 14,615.10
  4. Step 4: Simplify right side
    20,490.30x = 449,201,675.30
  5. Step 5: Solve for x
    x = 449,201,675.30/20,490.30
  6. Step 6: Final answer
    x = 21,922.65

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Similar ratio
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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.