Home / 9,931.24-13,721.70-8,272.36

Finding the Fourth Proportional to 9,931.24, 13,721.70 and 8,272.36

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Solution

The fourth proportional to 9,931.24, 13,721.70 and 8,272.36 is: 11,429.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,931.24 : 13,721.70 = 8,272.36 : x
  2. Step 2: Convert to fraction form
    9,931.24/13,721.70 = 8,272.36/x
  3. Step 3: Cross multiply
    9,931.24x = 13,721.70 × 8,272.36
  4. Step 4: Simplify right side
    9,931.24x = 113,510,842.21
  5. Step 5: Solve for x
    x = 113,510,842.21/9,931.24
  6. Step 6: Final answer
    x = 11,429.67

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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.