Home / 38,311.10-52,868.54-21,315

Finding the Fourth Proportional to 38,311.10, 52,868.54 and 21,315

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Solution

The fourth proportional to 38,311.10, 52,868.54 and 21,315 is: 29,414.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,311.10 : 52,868.54 = 21,315 : x
  2. Step 2: Convert to fraction form
    38,311.10/52,868.54 = 21,315/x
  3. Step 3: Cross multiply
    38,311.10x = 52,868.54 × 21,315
  4. Step 4: Simplify right side
    38,311.10x = 1,126,892,930.10
  5. Step 5: Solve for x
    x = 1,126,892,930.10/38,311.10
  6. Step 6: Final answer
    x = 29,414.27

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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.