Home / 13,992.54-20,988.12-5,226.77

Finding the Fourth Proportional to 13,992.54, 20,988.12 and 5,226.77

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Solution

The fourth proportional to 13,992.54, 20,988.12 and 5,226.77 is: 7,839.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.54 : 20,988.12 = 5,226.77 : x
  2. Step 2: Convert to fraction form
    13,992.54/20,988.12 = 5,226.77/x
  3. Step 3: Cross multiply
    13,992.54x = 20,988.12 × 5,226.77
  4. Step 4: Simplify right side
    13,992.54x = 109,700,075.97
  5. Step 5: Solve for x
    x = 109,700,075.97/13,992.54
  6. Step 6: Final answer
    x = 7,839.90

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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.