Home / 29,121.60-43,624.80-19,790.40

Finding the Fourth Proportional to 29,121.60, 43,624.80 and 19,790.40

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Solution

The fourth proportional to 29,121.60, 43,624.80 and 19,790.40 is: 29,646.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,121.60 : 43,624.80 = 19,790.40 : x
  2. Step 2: Convert to fraction form
    29,121.60/43,624.80 = 19,790.40/x
  3. Step 3: Cross multiply
    29,121.60x = 43,624.80 × 19,790.40
  4. Step 4: Simplify right side
    29,121.60x = 863,352,241.92
  5. Step 5: Solve for x
    x = 863,352,241.92/29,121.60
  6. Step 6: Final answer
    x = 29,646.46

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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.