Home / 13,975.40-20,956.61-5,207.96

Finding the Fourth Proportional to 13,975.40, 20,956.61 and 5,207.96

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Solution

The fourth proportional to 13,975.40, 20,956.61 and 5,207.96 is: 7,809.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.40 : 20,956.61 = 5,207.96 : x
  2. Step 2: Convert to fraction form
    13,975.40/20,956.61 = 5,207.96/x
  3. Step 3: Cross multiply
    13,975.40x = 20,956.61 × 5,207.96
  4. Step 4: Simplify right side
    13,975.40x = 109,141,094.85
  5. Step 5: Solve for x
    x = 109,141,094.85/13,975.40
  6. Step 6: Final answer
    x = 7,809.52

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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.