Home / 30,546.74-42,175.14-19,794.80

Finding the Fourth Proportional to 30,546.74, 42,175.14 and 19,794.80

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Solution

The fourth proportional to 30,546.74, 42,175.14 and 19,794.80 is: 27,330.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,546.74 : 42,175.14 = 19,794.80 : x
  2. Step 2: Convert to fraction form
    30,546.74/42,175.14 = 19,794.80/x
  3. Step 3: Cross multiply
    30,546.74x = 42,175.14 × 19,794.80
  4. Step 4: Simplify right side
    30,546.74x = 834,848,461.27
  5. Step 5: Solve for x
    x = 834,848,461.27/30,546.74
  6. Step 6: Final answer
    x = 27,330.20

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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.