Home / 13,633.47-18,813.87-7,665.12

Finding the Fourth Proportional to 13,633.47, 18,813.87 and 7,665.12

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Solution

The fourth proportional to 13,633.47, 18,813.87 and 7,665.12 is: 10,577.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633.47 : 18,813.87 = 7,665.12 : x
  2. Step 2: Convert to fraction form
    13,633.47/18,813.87 = 7,665.12/x
  3. Step 3: Cross multiply
    13,633.47x = 18,813.87 × 7,665.12
  4. Step 4: Simplify right side
    13,633.47x = 144,210,571.21
  5. Step 5: Solve for x
    x = 144,210,571.21/13,633.47
  6. Step 6: Final answer
    x = 10,577.69

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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.