Home / 13,605.52-20,389.92-10,308.28

Finding the Fourth Proportional to 13,605.52, 20,389.92 and 10,308.28

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Solution

The fourth proportional to 13,605.52, 20,389.92 and 10,308.28 is: 15,448.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.52 : 20,389.92 = 10,308.28 : x
  2. Step 2: Convert to fraction form
    13,605.52/20,389.92 = 10,308.28/x
  3. Step 3: Cross multiply
    13,605.52x = 20,389.92 × 10,308.28
  4. Step 4: Simplify right side
    13,605.52x = 210,185,004.54
  5. Step 5: Solve for x
    x = 210,185,004.54/13,605.52
  6. Step 6: Final answer
    x = 15,448.51

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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.