Home / 12,388.09-17,071.96-12,160.36

Finding the Fourth Proportional to 12,388.09, 17,071.96 and 12,160.36

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Solution

The fourth proportional to 12,388.09, 17,071.96 and 12,160.36 is: 16,758.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.09 : 17,071.96 = 12,160.36 : x
  2. Step 2: Convert to fraction form
    12,388.09/17,071.96 = 12,160.36/x
  3. Step 3: Cross multiply
    12,388.09x = 17,071.96 × 12,160.36
  4. Step 4: Simplify right side
    12,388.09x = 207,601,106.42
  5. Step 5: Solve for x
    x = 207,601,106.42/12,388.09
  6. Step 6: Final answer
    x = 16,758.12

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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.