Home / 28,681.08-43,021.61-8,959.65

Finding the Fourth Proportional to 28,681.08, 43,021.61 and 8,959.65

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Solution

The fourth proportional to 28,681.08, 43,021.61 and 8,959.65 is: 13,439.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,681.08 : 43,021.61 = 8,959.65 : x
  2. Step 2: Convert to fraction form
    28,681.08/43,021.61 = 8,959.65/x
  3. Step 3: Cross multiply
    28,681.08x = 43,021.61 × 8,959.65
  4. Step 4: Simplify right side
    28,681.08x = 385,458,697.99
  5. Step 5: Solve for x
    x = 385,458,697.99/28,681.08
  6. Step 6: Final answer
    x = 13,439.48

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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.