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Finding the Fourth Proportional to 28,773.76, 43,152.96 and 7,998.40

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Solution

The fourth proportional to 28,773.76, 43,152.96 and 7,998.40 is: 11,995.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,773.76 : 43,152.96 = 7,998.40 : x
  2. Step 2: Convert to fraction form
    28,773.76/43,152.96 = 7,998.40/x
  3. Step 3: Cross multiply
    28,773.76x = 43,152.96 × 7,998.40
  4. Step 4: Simplify right side
    28,773.76x = 345,154,635.26
  5. Step 5: Solve for x
    x = 345,154,635.26/28,773.76
  6. Step 6: Final answer
    x = 11,995.47

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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.