Home / 13,487.57-18,614.64-7,747.28

Finding the Fourth Proportional to 13,487.57, 18,614.64 and 7,747.28

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Solution

The fourth proportional to 13,487.57, 18,614.64 and 7,747.28 is: 10,692.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.57 : 18,614.64 = 7,747.28 : x
  2. Step 2: Convert to fraction form
    13,487.57/18,614.64 = 7,747.28/x
  3. Step 3: Cross multiply
    13,487.57x = 18,614.64 × 7,747.28
  4. Step 4: Simplify right side
    13,487.57x = 144,212,735.11
  5. Step 5: Solve for x
    x = 144,212,735.11/13,487.57
  6. Step 6: Final answer
    x = 10,692.27

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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.