Home / 20,453.18-30,679.65-5,661.99

Finding the Fourth Proportional to 20,453.18, 30,679.65 and 5,661.99

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Solution

The fourth proportional to 20,453.18, 30,679.65 and 5,661.99 is: 8,492.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.18 : 30,679.65 = 5,661.99 : x
  2. Step 2: Convert to fraction form
    20,453.18/30,679.65 = 5,661.99/x
  3. Step 3: Cross multiply
    20,453.18x = 30,679.65 × 5,661.99
  4. Step 4: Simplify right side
    20,453.18x = 173,707,871.50
  5. Step 5: Solve for x
    x = 173,707,871.50/20,453.18
  6. Step 6: Final answer
    x = 8,492.95

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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.