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Finding the Fourth Proportional to 28,807.44, 43,209.72 and 11,280.48

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Solution

The fourth proportional to 28,807.44, 43,209.72 and 11,280.48 is: 16,920.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.44 : 43,209.72 = 11,280.48 : x
  2. Step 2: Convert to fraction form
    28,807.44/43,209.72 = 11,280.48/x
  3. Step 3: Cross multiply
    28,807.44x = 43,209.72 × 11,280.48
  4. Step 4: Simplify right side
    28,807.44x = 487,426,382.27
  5. Step 5: Solve for x
    x = 487,426,382.27/28,807.44
  6. Step 6: Final answer
    x = 16,920.16

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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.