Home / 28,282.28-39,029.60-15,707.03

Finding the Fourth Proportional to 28,282.28, 39,029.60 and 15,707.03

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Solution

The fourth proportional to 28,282.28, 39,029.60 and 15,707.03 is: 21,675.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,282.28 : 39,029.60 = 15,707.03 : x
  2. Step 2: Convert to fraction form
    28,282.28/39,029.60 = 15,707.03/x
  3. Step 3: Cross multiply
    28,282.28x = 39,029.60 × 15,707.03
  4. Step 4: Simplify right side
    28,282.28x = 613,038,942.21
  5. Step 5: Solve for x
    x = 613,038,942.21/28,282.28
  6. Step 6: Final answer
    x = 21,675.73

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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.