Home / 9,931.20-13,704.38-5,455.26

Finding the Fourth Proportional to 9,931.20, 13,704.38 and 5,455.26

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Solution

The fourth proportional to 9,931.20, 13,704.38 and 5,455.26 is: 7,527.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,931.20 : 13,704.38 = 5,455.26 : x
  2. Step 2: Convert to fraction form
    9,931.20/13,704.38 = 5,455.26/x
  3. Step 3: Cross multiply
    9,931.20x = 13,704.38 × 5,455.26
  4. Step 4: Simplify right side
    9,931.20x = 74,760,956.04
  5. Step 5: Solve for x
    x = 74,760,956.04/9,931.20
  6. Step 6: Final answer
    x = 7,527.89

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1.5x scale

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.