Home / 28,864.81-43,310.98-19,993.81

Finding the Fourth Proportional to 28,864.81, 43,310.98 and 19,993.81

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Solution

The fourth proportional to 28,864.81, 43,310.98 and 19,993.81 is: 30,000.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,864.81 : 43,310.98 = 19,993.81 : x
  2. Step 2: Convert to fraction form
    28,864.81/43,310.98 = 19,993.81/x
  3. Step 3: Cross multiply
    28,864.81x = 43,310.98 × 19,993.81
  4. Step 4: Simplify right side
    28,864.81x = 865,951,405.06
  5. Step 5: Solve for x
    x = 865,951,405.06/28,864.81
  6. Step 6: Final answer
    x = 30,000.25

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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.