Home / 13,857.05-20,766.42-12,003.57

Finding the Fourth Proportional to 13,857.05, 20,766.42 and 12,003.57

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Solution

The fourth proportional to 13,857.05, 20,766.42 and 12,003.57 is: 17,988.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.05 : 20,766.42 = 12,003.57 : x
  2. Step 2: Convert to fraction form
    13,857.05/20,766.42 = 12,003.57/x
  3. Step 3: Cross multiply
    13,857.05x = 20,766.42 × 12,003.57
  4. Step 4: Simplify right side
    13,857.05x = 249,271,176.12
  5. Step 5: Solve for x
    x = 249,271,176.12/13,857.05
  6. Step 6: Final answer
    x = 17,988.76

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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.