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Finding the Fourth Proportional to 11,605.60, 16,015.08 and 6,890.32

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Solution

The fourth proportional to 11,605.60, 16,015.08 and 6,890.32 is: 9,508.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,605.60 : 16,015.08 = 6,890.32 : x
  2. Step 2: Convert to fraction form
    11,605.60/16,015.08 = 6,890.32/x
  3. Step 3: Cross multiply
    11,605.60x = 16,015.08 × 6,890.32
  4. Step 4: Simplify right side
    11,605.60x = 110,349,026.03
  5. Step 5: Solve for x
    x = 110,349,026.03/11,605.60
  6. Step 6: Final answer
    x = 9,508.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.