Home / 28,339.39-42,477.89-11,690.31

Finding the Fourth Proportional to 28,339.39, 42,477.89 and 11,690.31

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Solution

The fourth proportional to 28,339.39, 42,477.89 and 11,690.31 is: 17,522.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339.39 : 42,477.89 = 11,690.31 : x
  2. Step 2: Convert to fraction form
    28,339.39/42,477.89 = 11,690.31/x
  3. Step 3: Cross multiply
    28,339.39x = 42,477.89 × 11,690.31
  4. Step 4: Simplify right side
    28,339.39x = 496,579,702.25
  5. Step 5: Solve for x
    x = 496,579,702.25/28,339.39
  6. Step 6: Final answer
    x = 17,522.60

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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.