Home / 13,018.30-17,954.38-8,538.59

Finding the Fourth Proportional to 13,018.30, 17,954.38 and 8,538.59

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Solution

The fourth proportional to 13,018.30, 17,954.38 and 8,538.59 is: 11,776.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,018.30 : 17,954.38 = 8,538.59 : x
  2. Step 2: Convert to fraction form
    13,018.30/17,954.38 = 8,538.59/x
  3. Step 3: Cross multiply
    13,018.30x = 17,954.38 × 8,538.59
  4. Step 4: Simplify right side
    13,018.30x = 153,305,089.52
  5. Step 5: Solve for x
    x = 153,305,089.52/13,018.30
  6. Step 6: Final answer
    x = 11,776.12

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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.