Home / 18,954.06-28,431.20-4,913.11

Finding the Fourth Proportional to 18,954.06, 28,431.20 and 4,913.11

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Solution

The fourth proportional to 18,954.06, 28,431.20 and 4,913.11 is: 7,369.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.06 : 28,431.20 = 4,913.11 : x
  2. Step 2: Convert to fraction form
    18,954.06/28,431.20 = 4,913.11/x
  3. Step 3: Cross multiply
    18,954.06x = 28,431.20 × 4,913.11
  4. Step 4: Simplify right side
    18,954.06x = 139,685,613.03
  5. Step 5: Solve for x
    x = 139,685,613.03/18,954.06
  6. Step 6: Final answer
    x = 7,369.69

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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.