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Finding the Fourth Proportional to 28,807.56, 43,207.70 and 11,289.69

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Solution

The fourth proportional to 28,807.56, 43,207.70 and 11,289.69 is: 16,933.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.56 : 43,207.70 = 11,289.69 : x
  2. Step 2: Convert to fraction form
    28,807.56/43,207.70 = 11,289.69/x
  3. Step 3: Cross multiply
    28,807.56x = 43,207.70 × 11,289.69
  4. Step 4: Simplify right side
    28,807.56x = 487,801,482.16
  5. Step 5: Solve for x
    x = 487,801,482.16/28,807.56
  6. Step 6: Final answer
    x = 16,933.11

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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.