Home / 13,577.49-18,736.61-7,911.87

Finding the Fourth Proportional to 13,577.49, 18,736.61 and 7,911.87

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Solution

The fourth proportional to 13,577.49, 18,736.61 and 7,911.87 is: 10,918.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,577.49 : 18,736.61 = 7,911.87 : x
  2. Step 2: Convert to fraction form
    13,577.49/18,736.61 = 7,911.87/x
  3. Step 3: Cross multiply
    13,577.49x = 18,736.61 × 7,911.87
  4. Step 4: Simplify right side
    13,577.49x = 148,241,583.00
  5. Step 5: Solve for x
    x = 148,241,583.00/13,577.49
  6. Step 6: Final answer
    x = 10,918.19

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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.