Home / 13,615.27-18,789.49-7,647.06

Finding the Fourth Proportional to 13,615.27, 18,789.49 and 7,647.06

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Solution

The fourth proportional to 13,615.27, 18,789.49 and 7,647.06 is: 10,553.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.27 : 18,789.49 = 7,647.06 : x
  2. Step 2: Convert to fraction form
    13,615.27/18,789.49 = 7,647.06/x
  3. Step 3: Cross multiply
    13,615.27x = 18,789.49 × 7,647.06
  4. Step 4: Simplify right side
    13,615.27x = 143,684,357.40
  5. Step 5: Solve for x
    x = 143,684,357.40/13,615.27
  6. Step 6: Final answer
    x = 10,553.18

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1.5x scale

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.