Home / 20,885.04-28,734.75-18,238.77

Finding the Fourth Proportional to 20,885.04, 28,734.75 and 18,238.77

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Solution

The fourth proportional to 20,885.04, 28,734.75 and 18,238.77 is: 25,093.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.04 : 28,734.75 = 18,238.77 : x
  2. Step 2: Convert to fraction form
    20,885.04/28,734.75 = 18,238.77/x
  3. Step 3: Cross multiply
    20,885.04x = 28,734.75 × 18,238.77
  4. Step 4: Simplify right side
    20,885.04x = 524,086,496.26
  5. Step 5: Solve for x
    x = 524,086,496.26/20,885.04
  6. Step 6: Final answer
    x = 25,093.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.