Home / 28,367.56-42,551.34-12,789.64

Finding the Fourth Proportional to 28,367.56, 42,551.34 and 12,789.64

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Solution

The fourth proportional to 28,367.56, 42,551.34 and 12,789.64 is: 19,184.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,367.56 : 42,551.34 = 12,789.64 : x
  2. Step 2: Convert to fraction form
    28,367.56/42,551.34 = 12,789.64/x
  3. Step 3: Cross multiply
    28,367.56x = 42,551.34 × 12,789.64
  4. Step 4: Simplify right side
    28,367.56x = 544,216,320.12
  5. Step 5: Solve for x
    x = 544,216,320.12/28,367.56
  6. Step 6: Final answer
    x = 19,184.46

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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.