Home / 13,107.08-18,086.38-7,656.28

Finding the Fourth Proportional to 13,107.08, 18,086.38 and 7,656.28

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Solution

The fourth proportional to 13,107.08, 18,086.38 and 7,656.28 is: 10,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,107.08 : 18,086.38 = 7,656.28 : x
  2. Step 2: Convert to fraction form
    13,107.08/18,086.38 = 7,656.28/x
  3. Step 3: Cross multiply
    13,107.08x = 18,086.38 × 7,656.28
  4. Step 4: Simplify right side
    13,107.08x = 138,474,389.47
  5. Step 5: Solve for x
    x = 138,474,389.47/13,107.08
  6. Step 6: Final answer
    x = 10,564.85

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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.