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Finding the Fourth Proportional to 28,868.52, 43,303.92 and 9,147.06

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Solution

The fourth proportional to 28,868.52, 43,303.92 and 9,147.06 is: 13,720.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,868.52 : 43,303.92 = 9,147.06 : x
  2. Step 2: Convert to fraction form
    28,868.52/43,303.92 = 9,147.06/x
  3. Step 3: Cross multiply
    28,868.52x = 43,303.92 × 9,147.06
  4. Step 4: Simplify right side
    28,868.52x = 396,103,554.48
  5. Step 5: Solve for x
    x = 396,103,554.48/28,868.52
  6. Step 6: Final answer
    x = 13,720.95

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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.