Home / 12,390.30-17,093.43-7,671.24

Finding the Fourth Proportional to 12,390.30, 17,093.43 and 7,671.24

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Solution

The fourth proportional to 12,390.30, 17,093.43 and 7,671.24 is: 10,583.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.30 : 17,093.43 = 7,671.24 : x
  2. Step 2: Convert to fraction form
    12,390.30/17,093.43 = 7,671.24/x
  3. Step 3: Cross multiply
    12,390.30x = 17,093.43 × 7,671.24
  4. Step 4: Simplify right side
    12,390.30x = 131,127,803.95
  5. Step 5: Solve for x
    x = 131,127,803.95/12,390.30
  6. Step 6: Final answer
    x = 10,583.10

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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.