Home / 20,668.19-31,004.32-6,624.68

Finding the Fourth Proportional to 20,668.19, 31,004.32 and 6,624.68

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Solution

The fourth proportional to 20,668.19, 31,004.32 and 6,624.68 is: 9,937.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.19 : 31,004.32 = 6,624.68 : x
  2. Step 2: Convert to fraction form
    20,668.19/31,004.32 = 6,624.68/x
  3. Step 3: Cross multiply
    20,668.19x = 31,004.32 × 6,624.68
  4. Step 4: Simplify right side
    20,668.19x = 205,393,543.60
  5. Step 5: Solve for x
    x = 205,393,543.60/20,668.19
  6. Step 6: Final answer
    x = 9,937.67

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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.