Home / 21,372.76-29,336.41-20,459.35

Finding the Fourth Proportional to 21,372.76, 29,336.41 and 20,459.35

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Solution

The fourth proportional to 21,372.76, 29,336.41 and 20,459.35 is: 28,082.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372.76 : 29,336.41 = 20,459.35 : x
  2. Step 2: Convert to fraction form
    21,372.76/29,336.41 = 20,459.35/x
  3. Step 3: Cross multiply
    21,372.76x = 29,336.41 × 20,459.35
  4. Step 4: Simplify right side
    21,372.76x = 600,203,942.18
  5. Step 5: Solve for x
    x = 600,203,942.18/21,372.76
  6. Step 6: Final answer
    x = 28,082.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.