Home / 9,279.55-13,931.21-7,971.67

Finding the Fourth Proportional to 9,279.55, 13,931.21 and 7,971.67

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Solution

The fourth proportional to 9,279.55, 13,931.21 and 7,971.67 is: 11,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,279.55 : 13,931.21 = 7,971.67 : x
  2. Step 2: Convert to fraction form
    9,279.55/13,931.21 = 7,971.67/x
  3. Step 3: Cross multiply
    9,279.55x = 13,931.21 × 7,971.67
  4. Step 4: Simplify right side
    9,279.55x = 111,055,008.82
  5. Step 5: Solve for x
    x = 111,055,008.82/9,279.55
  6. Step 6: Final answer
    x = 11,967.71

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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.