Home / 18,947.85-28,424.36-6,464.52

Finding the Fourth Proportional to 18,947.85, 28,424.36 and 6,464.52

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Solution

The fourth proportional to 18,947.85, 28,424.36 and 6,464.52 is: 9,697.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.85 : 28,424.36 = 6,464.52 : x
  2. Step 2: Convert to fraction form
    18,947.85/28,424.36 = 6,464.52/x
  3. Step 3: Cross multiply
    18,947.85x = 28,424.36 × 6,464.52
  4. Step 4: Simplify right side
    18,947.85x = 183,749,843.71
  5. Step 5: Solve for x
    x = 183,749,843.71/18,947.85
  6. Step 6: Final answer
    x = 9,697.66

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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.