Home / 38,610.89-53,280.06-21,611.24

Finding the Fourth Proportional to 38,610.89, 53,280.06 and 21,611.24

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Solution

The fourth proportional to 38,610.89, 53,280.06 and 21,611.24 is: 29,821.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,610.89 : 53,280.06 = 21,611.24 : x
  2. Step 2: Convert to fraction form
    38,610.89/53,280.06 = 21,611.24/x
  3. Step 3: Cross multiply
    38,610.89x = 53,280.06 × 21,611.24
  4. Step 4: Simplify right side
    38,610.89x = 1,151,447,897.47
  5. Step 5: Solve for x
    x = 1,151,447,897.47/38,610.89
  6. Step 6: Final answer
    x = 29,821.85

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.