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Finding the Fourth Proportional to 27,740.56, 38,281.60 and 15,804.60

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Solution

The fourth proportional to 27,740.56, 38,281.60 and 15,804.60 is: 21,810.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,740.56 : 38,281.60 = 15,804.60 : x
  2. Step 2: Convert to fraction form
    27,740.56/38,281.60 = 15,804.60/x
  3. Step 3: Cross multiply
    27,740.56x = 38,281.60 × 15,804.60
  4. Step 4: Simplify right side
    27,740.56x = 605,025,375.36
  5. Step 5: Solve for x
    x = 605,025,375.36/27,740.56
  6. Step 6: Final answer
    x = 21,810.14

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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.