Home / 28,242.52-38,976.06-15,667

Finding the Fourth Proportional to 28,242.52, 38,976.06 and 15,667

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Solution

The fourth proportional to 28,242.52, 38,976.06 and 15,667 is: 21,621.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,242.52 : 38,976.06 = 15,667 : x
  2. Step 2: Convert to fraction form
    28,242.52/38,976.06 = 15,667/x
  3. Step 3: Cross multiply
    28,242.52x = 38,976.06 × 15,667
  4. Step 4: Simplify right side
    28,242.52x = 610,637,932.02
  5. Step 5: Solve for x
    x = 610,637,932.02/28,242.52
  6. Step 6: Final answer
    x = 21,621.23

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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.