Home / 20,727.04-31,090.72-7,579.84

Finding the Fourth Proportional to 20,727.04, 31,090.72 and 7,579.84

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Solution

The fourth proportional to 20,727.04, 31,090.72 and 7,579.84 is: 11,369.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.04 : 31,090.72 = 7,579.84 : x
  2. Step 2: Convert to fraction form
    20,727.04/31,090.72 = 7,579.84/x
  3. Step 3: Cross multiply
    20,727.04x = 31,090.72 × 7,579.84
  4. Step 4: Simplify right side
    20,727.04x = 235,662,683.08
  5. Step 5: Solve for x
    x = 235,662,683.08/20,727.04
  6. Step 6: Final answer
    x = 11,369.82

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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.