Home / 18,905.40-28,362.69-5,758.02

Finding the Fourth Proportional to 18,905.40, 28,362.69 and 5,758.02

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Solution

The fourth proportional to 18,905.40, 28,362.69 and 5,758.02 is: 8,638.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.40 : 28,362.69 = 5,758.02 : x
  2. Step 2: Convert to fraction form
    18,905.40/28,362.69 = 5,758.02/x
  3. Step 3: Cross multiply
    18,905.40x = 28,362.69 × 5,758.02
  4. Step 4: Simplify right side
    18,905.40x = 163,312,936.27
  5. Step 5: Solve for x
    x = 163,312,936.27/18,905.40
  6. Step 6: Final answer
    x = 8,638.43

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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.