Home / 21,236.56-29,306.60-13,283.30

Finding the Fourth Proportional to 21,236.56, 29,306.60 and 13,283.30

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Solution

The fourth proportional to 21,236.56, 29,306.60 and 13,283.30 is: 18,331.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.56 : 29,306.60 = 13,283.30 : x
  2. Step 2: Convert to fraction form
    21,236.56/29,306.60 = 13,283.30/x
  3. Step 3: Cross multiply
    21,236.56x = 29,306.60 × 13,283.30
  4. Step 4: Simplify right side
    21,236.56x = 389,288,359.78
  5. Step 5: Solve for x
    x = 389,288,359.78/21,236.56
  6. Step 6: Final answer
    x = 18,331.05

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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.