Home / 28,890.36-43,316.84-18,999.65

Finding the Fourth Proportional to 28,890.36, 43,316.84 and 18,999.65

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Solution

The fourth proportional to 28,890.36, 43,316.84 and 18,999.65 is: 28,487.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.36 : 43,316.84 = 18,999.65 : x
  2. Step 2: Convert to fraction form
    28,890.36/43,316.84 = 18,999.65/x
  3. Step 3: Cross multiply
    28,890.36x = 43,316.84 × 18,999.65
  4. Step 4: Simplify right side
    28,890.36x = 823,004,487.52
  5. Step 5: Solve for x
    x = 823,004,487.52/28,890.36
  6. Step 6: Final answer
    x = 28,487.17

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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.