Home / 27,639.58-38,143.65-15,704.94

Finding the Fourth Proportional to 27,639.58, 38,143.65 and 15,704.94

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Solution

The fourth proportional to 27,639.58, 38,143.65 and 15,704.94 is: 21,673.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,639.58 : 38,143.65 = 15,704.94 : x
  2. Step 2: Convert to fraction form
    27,639.58/38,143.65 = 15,704.94/x
  3. Step 3: Cross multiply
    27,639.58x = 38,143.65 × 15,704.94
  4. Step 4: Simplify right side
    27,639.58x = 599,043,734.63
  5. Step 5: Solve for x
    x = 599,043,734.63/27,639.58
  6. Step 6: Final answer
    x = 21,673.40

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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.