Home / 12,321.19-17,000.58-8,538.49

Finding the Fourth Proportional to 12,321.19, 17,000.58 and 8,538.49

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Solution

The fourth proportional to 12,321.19, 17,000.58 and 8,538.49 is: 11,781.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.19 : 17,000.58 = 8,538.49 : x
  2. Step 2: Convert to fraction form
    12,321.19/17,000.58 = 8,538.49/x
  3. Step 3: Cross multiply
    12,321.19x = 17,000.58 × 8,538.49
  4. Step 4: Simplify right side
    12,321.19x = 145,159,282.32
  5. Step 5: Solve for x
    x = 145,159,282.32/12,321.19
  6. Step 6: Final answer
    x = 11,781.27

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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.