Home / 18,986.19-28,478.16-5,838.47

Finding the Fourth Proportional to 18,986.19, 28,478.16 and 5,838.47

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Solution

The fourth proportional to 18,986.19, 28,478.16 and 5,838.47 is: 8,757.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986.19 : 28,478.16 = 5,838.47 : x
  2. Step 2: Convert to fraction form
    18,986.19/28,478.16 = 5,838.47/x
  3. Step 3: Cross multiply
    18,986.19x = 28,478.16 × 5,838.47
  4. Step 4: Simplify right side
    18,986.19x = 166,268,882.82
  5. Step 5: Solve for x
    x = 166,268,882.82/18,986.19
  6. Step 6: Final answer
    x = 8,757.36

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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.