Home / 18,968.91-26,172.51-12,159.83

Finding the Fourth Proportional to 18,968.91, 26,172.51 and 12,159.83

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Solution

The fourth proportional to 18,968.91, 26,172.51 and 12,159.83 is: 16,777.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.91 : 26,172.51 = 12,159.83 : x
  2. Step 2: Convert to fraction form
    18,968.91/26,172.51 = 12,159.83/x
  3. Step 3: Cross multiply
    18,968.91x = 26,172.51 × 12,159.83
  4. Step 4: Simplify right side
    18,968.91x = 318,253,118.61
  5. Step 5: Solve for x
    x = 318,253,118.61/18,968.91
  6. Step 6: Final answer
    x = 16,777.61

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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.