Home / 25,765.49-38,653.74-7,995.78

Finding the Fourth Proportional to 25,765.49, 38,653.74 and 7,995.78

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Solution

The fourth proportional to 25,765.49, 38,653.74 and 7,995.78 is: 11,995.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,765.49 : 38,653.74 = 7,995.78 : x
  2. Step 2: Convert to fraction form
    25,765.49/38,653.74 = 7,995.78/x
  3. Step 3: Cross multiply
    25,765.49x = 38,653.74 × 7,995.78
  4. Step 4: Simplify right side
    25,765.49x = 309,066,801.22
  5. Step 5: Solve for x
    x = 309,066,801.22/25,765.49
  6. Step 6: Final answer
    x = 11,995.38

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Half scale
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Double scale
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Similar ratio
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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.