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Finding the Fourth Proportional to 14,009.62, 21,015.64 and 4,647.64

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Solution

The fourth proportional to 14,009.62, 21,015.64 and 4,647.64 is: 6,971.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.62 : 21,015.64 = 4,647.64 : x
  2. Step 2: Convert to fraction form
    14,009.62/21,015.64 = 4,647.64/x
  3. Step 3: Cross multiply
    14,009.62x = 21,015.64 × 4,647.64
  4. Step 4: Simplify right side
    14,009.62x = 97,673,129.09
  5. Step 5: Solve for x
    x = 97,673,129.09/14,009.62
  6. Step 6: Final answer
    x = 6,971.86

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1.5x scale

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.