Home / 27,780.26-38,336.78-15,683.31

Finding the Fourth Proportional to 27,780.26, 38,336.78 and 15,683.31

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Solution

The fourth proportional to 27,780.26, 38,336.78 and 15,683.31 is: 21,642.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.26 : 38,336.78 = 15,683.31 : x
  2. Step 2: Convert to fraction form
    27,780.26/38,336.78 = 15,683.31/x
  3. Step 3: Cross multiply
    27,780.26x = 38,336.78 × 15,683.31
  4. Step 4: Simplify right side
    27,780.26x = 601,247,644.35
  5. Step 5: Solve for x
    x = 601,247,644.35/27,780.26
  6. Step 6: Final answer
    x = 21,642.99

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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.