Home / 20,416.28-30,618.93-5,621.67

Finding the Fourth Proportional to 20,416.28, 30,618.93 and 5,621.67

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Solution

The fourth proportional to 20,416.28, 30,618.93 and 5,621.67 is: 8,431.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.28 : 30,618.93 = 5,621.67 : x
  2. Step 2: Convert to fraction form
    20,416.28/30,618.93 = 5,621.67/x
  3. Step 3: Cross multiply
    20,416.28x = 30,618.93 × 5,621.67
  4. Step 4: Simplify right side
    20,416.28x = 172,129,520.21
  5. Step 5: Solve for x
    x = 172,129,520.21/20,416.28
  6. Step 6: Final answer
    x = 8,431.00

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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.