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Finding the Fourth Proportional to 28,993.51, 43,506.68 and 12,351.81

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Solution

The fourth proportional to 28,993.51, 43,506.68 and 12,351.81 is: 18,534.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,993.51 : 43,506.68 = 12,351.81 : x
  2. Step 2: Convert to fraction form
    28,993.51/43,506.68 = 12,351.81/x
  3. Step 3: Cross multiply
    28,993.51x = 43,506.68 × 12,351.81
  4. Step 4: Simplify right side
    28,993.51x = 537,386,245.09
  5. Step 5: Solve for x
    x = 537,386,245.09/28,993.51
  6. Step 6: Final answer
    x = 18,534.71

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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.