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Finding the Fourth Proportional to 28,900.54, 43,314.54 and 15,540.76

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Solution

The fourth proportional to 28,900.54, 43,314.54 and 15,540.76 is: 23,291.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,900.54 : 43,314.54 = 15,540.76 : x
  2. Step 2: Convert to fraction form
    28,900.54/43,314.54 = 15,540.76/x
  3. Step 3: Cross multiply
    28,900.54x = 43,314.54 × 15,540.76
  4. Step 4: Simplify right side
    28,900.54x = 673,140,870.65
  5. Step 5: Solve for x
    x = 673,140,870.65/28,900.54
  6. Step 6: Final answer
    x = 23,291.64

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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.