Home / 28,721.87-39,637.53-15,976.37

Finding the Fourth Proportional to 28,721.87, 39,637.53 and 15,976.37

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Solution

The fourth proportional to 28,721.87, 39,637.53 and 15,976.37 is: 22,048.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.87 : 39,637.53 = 15,976.37 : x
  2. Step 2: Convert to fraction form
    28,721.87/39,637.53 = 15,976.37/x
  3. Step 3: Cross multiply
    28,721.87x = 39,637.53 × 15,976.37
  4. Step 4: Simplify right side
    28,721.87x = 633,263,944.26
  5. Step 5: Solve for x
    x = 633,263,944.26/28,721.87
  6. Step 6: Final answer
    x = 22,048.14

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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.