Home / 28,238.48-38,976.72-17,621.72

Finding the Fourth Proportional to 28,238.48, 38,976.72 and 17,621.72

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Solution

The fourth proportional to 28,238.48, 38,976.72 and 17,621.72 is: 24,322.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,238.48 : 38,976.72 = 17,621.72 : x
  2. Step 2: Convert to fraction form
    28,238.48/38,976.72 = 17,621.72/x
  3. Step 3: Cross multiply
    28,238.48x = 38,976.72 × 17,621.72
  4. Step 4: Simplify right side
    28,238.48x = 686,836,846.36
  5. Step 5: Solve for x
    x = 686,836,846.36/28,238.48
  6. Step 6: Final answer
    x = 24,322.73

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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.