Home / 13,616.67-20,405.85-10,830.99

Finding the Fourth Proportional to 13,616.67, 20,405.85 and 10,830.99

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Solution

The fourth proportional to 13,616.67, 20,405.85 and 10,830.99 is: 16,231.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,616.67 : 20,405.85 = 10,830.99 : x
  2. Step 2: Convert to fraction form
    13,616.67/20,405.85 = 10,830.99/x
  3. Step 3: Cross multiply
    13,616.67x = 20,405.85 × 10,830.99
  4. Step 4: Simplify right side
    13,616.67x = 221,015,557.29
  5. Step 5: Solve for x
    x = 221,015,557.29/13,616.67
  6. Step 6: Final answer
    x = 16,231.25

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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.