Home / 19,783.92-29,678.80-5,742.12

Finding the Fourth Proportional to 19,783.92, 29,678.80 and 5,742.12

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Solution

The fourth proportional to 19,783.92, 29,678.80 and 5,742.12 is: 8,614.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,783.92 : 29,678.80 = 5,742.12 : x
  2. Step 2: Convert to fraction form
    19,783.92/29,678.80 = 5,742.12/x
  3. Step 3: Cross multiply
    19,783.92x = 29,678.80 × 5,742.12
  4. Step 4: Simplify right side
    19,783.92x = 170,419,231.06
  5. Step 5: Solve for x
    x = 170,419,231.06/19,783.92
  6. Step 6: Final answer
    x = 8,614.03

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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.