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Finding the Fourth Proportional to 13,956.45, 20,899.47 and 9,262.20

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Solution

The fourth proportional to 13,956.45, 20,899.47 and 9,262.20 is: 13,869.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.45 : 20,899.47 = 9,262.20 : x
  2. Step 2: Convert to fraction form
    13,956.45/20,899.47 = 9,262.20/x
  3. Step 3: Cross multiply
    13,956.45x = 20,899.47 × 9,262.20
  4. Step 4: Simplify right side
    13,956.45x = 193,575,071.03
  5. Step 5: Solve for x
    x = 193,575,071.03/13,956.45
  6. Step 6: Final answer
    x = 13,869.94

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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.