Home / 30,068.18-41,528.20-20,491.67

Finding the Fourth Proportional to 30,068.18, 41,528.20 and 20,491.67

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Solution

The fourth proportional to 30,068.18, 41,528.20 and 20,491.67 is: 28,301.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,068.18 : 41,528.20 = 20,491.67 : x
  2. Step 2: Convert to fraction form
    30,068.18/41,528.20 = 20,491.67/x
  3. Step 3: Cross multiply
    30,068.18x = 41,528.20 × 20,491.67
  4. Step 4: Simplify right side
    30,068.18x = 850,982,170.09
  5. Step 5: Solve for x
    x = 850,982,170.09/30,068.18
  6. Step 6: Final answer
    x = 28,301.75

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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.