Home / 20,572.44-30,858.65-4,990.07

Finding the Fourth Proportional to 20,572.44, 30,858.65 and 4,990.07

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Solution

The fourth proportional to 20,572.44, 30,858.65 and 4,990.07 is: 7,485.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.44 : 30,858.65 = 4,990.07 : x
  2. Step 2: Convert to fraction form
    20,572.44/30,858.65 = 4,990.07/x
  3. Step 3: Cross multiply
    20,572.44x = 30,858.65 × 4,990.07
  4. Step 4: Simplify right side
    20,572.44x = 153,986,644.36
  5. Step 5: Solve for x
    x = 153,986,644.36/20,572.44
  6. Step 6: Final answer
    x = 7,485.09

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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.