Home / 38,845.79-53,611.95-21,850.75

Finding the Fourth Proportional to 38,845.79, 53,611.95 and 21,850.75

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Solution

The fourth proportional to 38,845.79, 53,611.95 and 21,850.75 is: 30,156.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,845.79 : 53,611.95 = 21,850.75 : x
  2. Step 2: Convert to fraction form
    38,845.79/53,611.95 = 21,850.75/x
  3. Step 3: Cross multiply
    38,845.79x = 53,611.95 × 21,850.75
  4. Step 4: Simplify right side
    38,845.79x = 1,171,461,316.46
  5. Step 5: Solve for x
    x = 1,171,461,316.46/38,845.79
  6. Step 6: Final answer
    x = 30,156.71

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Half scale
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Double scale
Find fourth proportional to 38,846.79, 53,613.33 and 21,851.75
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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.