Home / 28,243.28-38,975.53-15,668.03

Finding the Fourth Proportional to 28,243.28, 38,975.53 and 15,668.03

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Solution

The fourth proportional to 28,243.28, 38,975.53 and 15,668.03 is: 21,621.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.28 : 38,975.53 = 15,668.03 : x
  2. Step 2: Convert to fraction form
    28,243.28/38,975.53 = 15,668.03/x
  3. Step 3: Cross multiply
    28,243.28x = 38,975.53 × 15,668.03
  4. Step 4: Simplify right side
    28,243.28x = 610,669,860.95
  5. Step 5: Solve for x
    x = 610,669,860.95/28,243.28
  6. Step 6: Final answer
    x = 21,621.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.