Home / 25,743.45-35,519.83-15,671.78

Finding the Fourth Proportional to 25,743.45, 35,519.83 and 15,671.78

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Solution

The fourth proportional to 25,743.45, 35,519.83 and 15,671.78 is: 21,623.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,743.45 : 35,519.83 = 15,671.78 : x
  2. Step 2: Convert to fraction form
    25,743.45/35,519.83 = 15,671.78/x
  3. Step 3: Cross multiply
    25,743.45x = 35,519.83 × 15,671.78
  4. Step 4: Simplify right side
    25,743.45x = 556,658,783.80
  5. Step 5: Solve for x
    x = 556,658,783.80/25,743.45
  6. Step 6: Final answer
    x = 21,623.32

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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.