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Finding the Fourth Proportional to 18,607.80, 27,914.28 and 5,458.32

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Solution

The fourth proportional to 18,607.80, 27,914.28 and 5,458.32 is: 8,188.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.80 : 27,914.28 = 5,458.32 : x
  2. Step 2: Convert to fraction form
    18,607.80/27,914.28 = 5,458.32/x
  3. Step 3: Cross multiply
    18,607.80x = 27,914.28 × 5,458.32
  4. Step 4: Simplify right side
    18,607.80x = 152,365,072.81
  5. Step 5: Solve for x
    x = 152,365,072.81/18,607.80
  6. Step 6: Final answer
    x = 8,188.24

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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.