Home / 28,979.20-43,483.44-13,408

Finding the Fourth Proportional to 28,979.20, 43,483.44 and 13,408

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Solution

The fourth proportional to 28,979.20, 43,483.44 and 13,408 is: 20,118.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979.20 : 43,483.44 = 13,408 : x
  2. Step 2: Convert to fraction form
    28,979.20/43,483.44 = 13,408/x
  3. Step 3: Cross multiply
    28,979.20x = 43,483.44 × 13,408
  4. Step 4: Simplify right side
    28,979.20x = 583,025,963.52
  5. Step 5: Solve for x
    x = 583,025,963.52/28,979.20
  6. Step 6: Final answer
    x = 20,118.77

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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.