Home / 21,938.35-32,910.26-7,143.29

Finding the Fourth Proportional to 21,938.35, 32,910.26 and 7,143.29

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Solution

The fourth proportional to 21,938.35, 32,910.26 and 7,143.29 is: 10,715.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,938.35 : 32,910.26 = 7,143.29 : x
  2. Step 2: Convert to fraction form
    21,938.35/32,910.26 = 7,143.29/x
  3. Step 3: Cross multiply
    21,938.35x = 32,910.26 × 7,143.29
  4. Step 4: Simplify right side
    21,938.35x = 235,087,679.60
  5. Step 5: Solve for x
    x = 235,087,679.60/21,938.35
  6. Step 6: Final answer
    x = 10,715.83

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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.