Home / 19,770.40-29,656.68-6,621.58

Finding the Fourth Proportional to 19,770.40, 29,656.68 and 6,621.58

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Solution

The fourth proportional to 19,770.40, 29,656.68 and 6,621.58 is: 9,932.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,770.40 : 29,656.68 = 6,621.58 : x
  2. Step 2: Convert to fraction form
    19,770.40/29,656.68 = 6,621.58/x
  3. Step 3: Cross multiply
    19,770.40x = 29,656.68 × 6,621.58
  4. Step 4: Simplify right side
    19,770.40x = 196,374,079.15
  5. Step 5: Solve for x
    x = 196,374,079.15/19,770.40
  6. Step 6: Final answer
    x = 9,932.73

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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.