Home / 18,816.88-28,232.10-7,130

Finding the Fourth Proportional to 18,816.88, 28,232.10 and 7,130

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Solution

The fourth proportional to 18,816.88, 28,232.10 and 7,130 is: 10,697.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816.88 : 28,232.10 = 7,130 : x
  2. Step 2: Convert to fraction form
    18,816.88/28,232.10 = 7,130/x
  3. Step 3: Cross multiply
    18,816.88x = 28,232.10 × 7,130
  4. Step 4: Simplify right side
    18,816.88x = 201,294,873
  5. Step 5: Solve for x
    x = 201,294,873/18,816.88
  6. Step 6: Final answer
    x = 10,697.57

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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.