Home / 13,491.44-18,617.28-8,455.48

Finding the Fourth Proportional to 13,491.44, 18,617.28 and 8,455.48

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Solution

The fourth proportional to 13,491.44, 18,617.28 and 8,455.48 is: 11,667.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.44 : 18,617.28 = 8,455.48 : x
  2. Step 2: Convert to fraction form
    13,491.44/18,617.28 = 8,455.48/x
  3. Step 3: Cross multiply
    13,491.44x = 18,617.28 × 8,455.48
  4. Step 4: Simplify right side
    13,491.44x = 157,418,038.69
  5. Step 5: Solve for x
    x = 157,418,038.69/13,491.44
  6. Step 6: Final answer
    x = 11,667.99

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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.