Home / 20,155.94-30,239.34-7,009.04

Finding the Fourth Proportional to 20,155.94, 30,239.34 and 7,009.04

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Solution

The fourth proportional to 20,155.94, 30,239.34 and 7,009.04 is: 10,515.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.94 : 30,239.34 = 7,009.04 : x
  2. Step 2: Convert to fraction form
    20,155.94/30,239.34 = 7,009.04/x
  3. Step 3: Cross multiply
    20,155.94x = 30,239.34 × 7,009.04
  4. Step 4: Simplify right side
    20,155.94x = 211,948,743.63
  5. Step 5: Solve for x
    x = 211,948,743.63/20,155.94
  6. Step 6: Final answer
    x = 10,515.45

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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.