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Finding the Fourth Proportional to 18,533.88, 27,804.78 and 10,639.98

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Solution

The fourth proportional to 18,533.88, 27,804.78 and 10,639.98 is: 15,962.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,533.88 : 27,804.78 = 10,639.98 : x
  2. Step 2: Convert to fraction form
    18,533.88/27,804.78 = 10,639.98/x
  3. Step 3: Cross multiply
    18,533.88x = 27,804.78 × 10,639.98
  4. Step 4: Simplify right side
    18,533.88x = 295,842,303.10
  5. Step 5: Solve for x
    x = 295,842,303.10/18,533.88
  6. Step 6: Final answer
    x = 15,962.24

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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.