Home / 20,910.60-31,365.72-9,223.83

Finding the Fourth Proportional to 20,910.60, 31,365.72 and 9,223.83

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Solution

The fourth proportional to 20,910.60, 31,365.72 and 9,223.83 is: 13,835.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.60 : 31,365.72 = 9,223.83 : x
  2. Step 2: Convert to fraction form
    20,910.60/31,365.72 = 9,223.83/x
  3. Step 3: Cross multiply
    20,910.60x = 31,365.72 × 9,223.83
  4. Step 4: Simplify right side
    20,910.60x = 289,312,069.11
  5. Step 5: Solve for x
    x = 289,312,069.11/20,910.60
  6. Step 6: Final answer
    x = 13,835.67

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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.