Home / 21,069.83-31,604.85-6,278.88

Finding the Fourth Proportional to 21,069.83, 31,604.85 and 6,278.88

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Solution

The fourth proportional to 21,069.83, 31,604.85 and 6,278.88 is: 9,418.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.83 : 31,604.85 = 6,278.88 : x
  2. Step 2: Convert to fraction form
    21,069.83/31,604.85 = 6,278.88/x
  3. Step 3: Cross multiply
    21,069.83x = 31,604.85 × 6,278.88
  4. Step 4: Simplify right side
    21,069.83x = 198,443,060.57
  5. Step 5: Solve for x
    x = 198,443,060.57/21,069.83
  6. Step 6: Final answer
    x = 9,418.35

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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.