Home / 25,694.78-38,518.80-9,889.72

Finding the Fourth Proportional to 25,694.78, 38,518.80 and 9,889.72

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Solution

The fourth proportional to 25,694.78, 38,518.80 and 9,889.72 is: 14,825.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,694.78 : 38,518.80 = 9,889.72 : x
  2. Step 2: Convert to fraction form
    25,694.78/38,518.80 = 9,889.72/x
  3. Step 3: Cross multiply
    25,694.78x = 38,518.80 × 9,889.72
  4. Step 4: Simplify right side
    25,694.78x = 380,940,146.74
  5. Step 5: Solve for x
    x = 380,940,146.74/25,694.78
  6. Step 6: Final answer
    x = 14,825.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.