Home / 20,774.07-31,157.73-5,979.62

Finding the Fourth Proportional to 20,774.07, 31,157.73 and 5,979.62

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Solution

The fourth proportional to 20,774.07, 31,157.73 and 5,979.62 is: 8,968.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.07 : 31,157.73 = 5,979.62 : x
  2. Step 2: Convert to fraction form
    20,774.07/31,157.73 = 5,979.62/x
  3. Step 3: Cross multiply
    20,774.07x = 31,157.73 × 5,979.62
  4. Step 4: Simplify right side
    20,774.07x = 186,311,463.36
  5. Step 5: Solve for x
    x = 186,311,463.36/20,774.07
  6. Step 6: Final answer
    x = 8,968.46

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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.