Home / 28,449.69-42,668.11-15,975.28

Finding the Fourth Proportional to 28,449.69, 42,668.11 and 15,975.28

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Solution

The fourth proportional to 28,449.69, 42,668.11 and 15,975.28 is: 23,959.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,449.69 : 42,668.11 = 15,975.28 : x
  2. Step 2: Convert to fraction form
    28,449.69/42,668.11 = 15,975.28/x
  3. Step 3: Cross multiply
    28,449.69x = 42,668.11 × 15,975.28
  4. Step 4: Simplify right side
    28,449.69x = 681,635,004.32
  5. Step 5: Solve for x
    x = 681,635,004.32/28,449.69
  6. Step 6: Final answer
    x = 23,959.31

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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.