Home / 28,947.78-43,442.43-12,319.50

Finding the Fourth Proportional to 28,947.78, 43,442.43 and 12,319.50

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Solution

The fourth proportional to 28,947.78, 43,442.43 and 12,319.50 is: 18,488.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947.78 : 43,442.43 = 12,319.50 : x
  2. Step 2: Convert to fraction form
    28,947.78/43,442.43 = 12,319.50/x
  3. Step 3: Cross multiply
    28,947.78x = 43,442.43 × 12,319.50
  4. Step 4: Simplify right side
    28,947.78x = 535,189,016.39
  5. Step 5: Solve for x
    x = 535,189,016.39/28,947.78
  6. Step 6: Final answer
    x = 18,488.08

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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.