Home / 13,035-17,988.30-7,147

Finding the Fourth Proportional to 13,035, 17,988.30 and 7,147

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Solution

The fourth proportional to 13,035, 17,988.30 and 7,147 is: 9,862.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,035 : 17,988.30 = 7,147 : x
  2. Step 2: Convert to fraction form
    13,035/17,988.30 = 7,147/x
  3. Step 3: Cross multiply
    13,035x = 17,988.30 × 7,147
  4. Step 4: Simplify right side
    13,035x = 128,562,380.10
  5. Step 5: Solve for x
    x = 128,562,380.10/13,035
  6. Step 6: Final answer
    x = 9,862.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.