Home / 17,975.52-26,956.80-12,428.64

Finding the Fourth Proportional to 17,975.52, 26,956.80 and 12,428.64

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Solution

The fourth proportional to 17,975.52, 26,956.80 and 12,428.64 is: 18,638.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,975.52 : 26,956.80 = 12,428.64 : x
  2. Step 2: Convert to fraction form
    17,975.52/26,956.80 = 12,428.64/x
  3. Step 3: Cross multiply
    17,975.52x = 26,956.80 × 12,428.64
  4. Step 4: Simplify right side
    17,975.52x = 335,036,362.75
  5. Step 5: Solve for x
    x = 335,036,362.75/17,975.52
  6. Step 6: Final answer
    x = 18,638.48

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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.