Home / 18,971.08-26,180.40-12,608.44

Finding the Fourth Proportional to 18,971.08, 26,180.40 and 12,608.44

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Solution

The fourth proportional to 18,971.08, 26,180.40 and 12,608.44 is: 17,399.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.08 : 26,180.40 = 12,608.44 : x
  2. Step 2: Convert to fraction form
    18,971.08/26,180.40 = 12,608.44/x
  3. Step 3: Cross multiply
    18,971.08x = 26,180.40 × 12,608.44
  4. Step 4: Simplify right side
    18,971.08x = 330,094,002.58
  5. Step 5: Solve for x
    x = 330,094,002.58/18,971.08
  6. Step 6: Final answer
    x = 17,399.85

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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.