Home / 27,780.37-38,336.97-15,683.47

Finding the Fourth Proportional to 27,780.37, 38,336.97 and 15,683.47

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Solution

The fourth proportional to 27,780.37, 38,336.97 and 15,683.47 is: 21,643.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.37 : 38,336.97 = 15,683.47 : x
  2. Step 2: Convert to fraction form
    27,780.37/38,336.97 = 15,683.47/x
  3. Step 3: Cross multiply
    27,780.37x = 38,336.97 × 15,683.47
  4. Step 4: Simplify right side
    27,780.37x = 601,256,853.39
  5. Step 5: Solve for x
    x = 601,256,853.39/27,780.37
  6. Step 6: Final answer
    x = 21,643.23

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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.