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Finding the Fourth Proportional to 18,901, 28,352.70 and 5,754.34

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Solution

The fourth proportional to 18,901, 28,352.70 and 5,754.34 is: 8,631.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901 : 28,352.70 = 5,754.34 : x
  2. Step 2: Convert to fraction form
    18,901/28,352.70 = 5,754.34/x
  3. Step 3: Cross multiply
    18,901x = 28,352.70 × 5,754.34
  4. Step 4: Simplify right side
    18,901x = 163,151,075.72
  5. Step 5: Solve for x
    x = 163,151,075.72/18,901
  6. Step 6: Final answer
    x = 8,631.88

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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.