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Finding the Fourth Proportional to 13,015.35, 17,956.35 and 8,541.59

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Solution

The fourth proportional to 13,015.35, 17,956.35 and 8,541.59 is: 11,784.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.35 : 17,956.35 = 8,541.59 : x
  2. Step 2: Convert to fraction form
    13,015.35/17,956.35 = 8,541.59/x
  3. Step 3: Cross multiply
    13,015.35x = 17,956.35 × 8,541.59
  4. Step 4: Simplify right side
    13,015.35x = 153,375,689.81
  5. Step 5: Solve for x
    x = 153,375,689.81/13,015.35
  6. Step 6: Final answer
    x = 11,784.22

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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.