Home / 20,956.40-31,434.61-5,374.03

Finding the Fourth Proportional to 20,956.40, 31,434.61 and 5,374.03

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Solution

The fourth proportional to 20,956.40, 31,434.61 and 5,374.03 is: 8,061.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.40 : 31,434.61 = 5,374.03 : x
  2. Step 2: Convert to fraction form
    20,956.40/31,434.61 = 5,374.03/x
  3. Step 3: Cross multiply
    20,956.40x = 31,434.61 × 5,374.03
  4. Step 4: Simplify right side
    20,956.40x = 168,930,353.14
  5. Step 5: Solve for x
    x = 168,930,353.14/20,956.40
  6. Step 6: Final answer
    x = 8,061.04

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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.