Home / 12,172.16-18,257.33-5,151.89

Finding the Fourth Proportional to 12,172.16, 18,257.33 and 5,151.89

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Solution

The fourth proportional to 12,172.16, 18,257.33 and 5,151.89 is: 7,727.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.16 : 18,257.33 = 5,151.89 : x
  2. Step 2: Convert to fraction form
    12,172.16/18,257.33 = 5,151.89/x
  3. Step 3: Cross multiply
    12,172.16x = 18,257.33 × 5,151.89
  4. Step 4: Simplify right side
    12,172.16x = 94,059,638.81
  5. Step 5: Solve for x
    x = 94,059,638.81/12,172.16
  6. Step 6: Final answer
    x = 7,727.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.