Home / 21,193.42-31,790.43-6,402.46

Finding the Fourth Proportional to 21,193.42, 31,790.43 and 6,402.46

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Solution

The fourth proportional to 21,193.42, 31,790.43 and 6,402.46 is: 9,603.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.42 : 31,790.43 = 6,402.46 : x
  2. Step 2: Convert to fraction form
    21,193.42/31,790.43 = 6,402.46/x
  3. Step 3: Cross multiply
    21,193.42x = 31,790.43 × 6,402.46
  4. Step 4: Simplify right side
    21,193.42x = 203,536,924.45
  5. Step 5: Solve for x
    x = 203,536,924.45/21,193.42
  6. Step 6: Final answer
    x = 9,603.78

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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.