Home / 27,724.63-38,255.56-15,788.20

Finding the Fourth Proportional to 27,724.63, 38,255.56 and 15,788.20

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Solution

The fourth proportional to 27,724.63, 38,255.56 and 15,788.20 is: 21,785.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,724.63 : 38,255.56 = 15,788.20 : x
  2. Step 2: Convert to fraction form
    27,724.63/38,255.56 = 15,788.20/x
  3. Step 3: Cross multiply
    27,724.63x = 38,255.56 × 15,788.20
  4. Step 4: Simplify right side
    27,724.63x = 603,986,432.39
  5. Step 5: Solve for x
    x = 603,986,432.39/27,724.63
  6. Step 6: Final answer
    x = 21,785.19

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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.