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Finding the Fourth Proportional to 42,992.80, 64,450.32 and 15,284.32

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Solution

The fourth proportional to 42,992.80, 64,450.32 and 15,284.32 is: 22,912.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,992.80 : 64,450.32 = 15,284.32 : x
  2. Step 2: Convert to fraction form
    42,992.80/64,450.32 = 15,284.32/x
  3. Step 3: Cross multiply
    42,992.80x = 64,450.32 × 15,284.32
  4. Step 4: Simplify right side
    42,992.80x = 985,079,314.98
  5. Step 5: Solve for x
    x = 985,079,314.98/42,992.80
  6. Step 6: Final answer
    x = 22,912.66

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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.