Home / 12,738.08-17,577.58-7,148

Finding the Fourth Proportional to 12,738.08, 17,577.58 and 7,148

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Solution

The fourth proportional to 12,738.08, 17,577.58 and 7,148 is: 9,863.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.08 : 17,577.58 = 7,148 : x
  2. Step 2: Convert to fraction form
    12,738.08/17,577.58 = 7,148/x
  3. Step 3: Cross multiply
    12,738.08x = 17,577.58 × 7,148
  4. Step 4: Simplify right side
    12,738.08x = 125,644,541.84
  5. Step 5: Solve for x
    x = 125,644,541.84/12,738.08
  6. Step 6: Final answer
    x = 9,863.70

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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.