Home / 28,637.24-39,519.23-15,890.31

Finding the Fourth Proportional to 28,637.24, 39,519.23 and 15,890.31

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Solution

The fourth proportional to 28,637.24, 39,519.23 and 15,890.31 is: 21,928.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,637.24 : 39,519.23 = 15,890.31 : x
  2. Step 2: Convert to fraction form
    28,637.24/39,519.23 = 15,890.31/x
  3. Step 3: Cross multiply
    28,637.24x = 39,519.23 × 15,890.31
  4. Step 4: Simplify right side
    28,637.24x = 627,972,736.21
  5. Step 5: Solve for x
    x = 627,972,736.21/28,637.24
  6. Step 6: Final answer
    x = 21,928.54

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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.