Home / 20,849.64-31,281.72-9,163.76

Finding the Fourth Proportional to 20,849.64, 31,281.72 and 9,163.76

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Solution

The fourth proportional to 20,849.64, 31,281.72 and 9,163.76 is: 13,748.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.64 : 31,281.72 = 9,163.76 : x
  2. Step 2: Convert to fraction form
    20,849.64/31,281.72 = 9,163.76/x
  3. Step 3: Cross multiply
    20,849.64x = 31,281.72 × 9,163.76
  4. Step 4: Simplify right side
    20,849.64x = 286,658,174.47
  5. Step 5: Solve for x
    x = 286,658,174.47/20,849.64
  6. Step 6: Final answer
    x = 13,748.83

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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.