Home / 27,825.60-38,389.62-15,880.44

Finding the Fourth Proportional to 27,825.60, 38,389.62 and 15,880.44

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Solution

The fourth proportional to 27,825.60, 38,389.62 and 15,880.44 is: 21,909.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,825.60 : 38,389.62 = 15,880.44 : x
  2. Step 2: Convert to fraction form
    27,825.60/38,389.62 = 15,880.44/x
  3. Step 3: Cross multiply
    27,825.60x = 38,389.62 × 15,880.44
  4. Step 4: Simplify right side
    27,825.60x = 609,644,057.03
  5. Step 5: Solve for x
    x = 609,644,057.03/27,825.60
  6. Step 6: Final answer
    x = 21,909.47

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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.