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Finding the Fourth Proportional to 12,465.90, 18,690.48 and 5,886

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Solution

The fourth proportional to 12,465.90, 18,690.48 and 5,886 is: 8,825.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,465.90 : 18,690.48 = 5,886 : x
  2. Step 2: Convert to fraction form
    12,465.90/18,690.48 = 5,886/x
  3. Step 3: Cross multiply
    12,465.90x = 18,690.48 × 5,886
  4. Step 4: Simplify right side
    12,465.90x = 110,012,165.28
  5. Step 5: Solve for x
    x = 110,012,165.28/12,465.90
  6. Step 6: Final answer
    x = 8,825.05

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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.