Home / 27,639.34-38,143.31-15,704.70

Finding the Fourth Proportional to 27,639.34, 38,143.31 and 15,704.70

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Solution

The fourth proportional to 27,639.34, 38,143.31 and 15,704.70 is: 21,673.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,639.34 : 38,143.31 = 15,704.70 : x
  2. Step 2: Convert to fraction form
    27,639.34/38,143.31 = 15,704.70/x
  3. Step 3: Cross multiply
    27,639.34x = 38,143.31 × 15,704.70
  4. Step 4: Simplify right side
    27,639.34x = 599,029,049.84
  5. Step 5: Solve for x
    x = 599,029,049.84/27,639.34
  6. Step 6: Final answer
    x = 21,673.06

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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.