Home / 14,750.40-20,381.49-11,790.66

Finding the Fourth Proportional to 14,750.40, 20,381.49 and 11,790.66

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Solution

The fourth proportional to 14,750.40, 20,381.49 and 11,790.66 is: 16,291.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,750.40 : 20,381.49 = 11,790.66 : x
  2. Step 2: Convert to fraction form
    14,750.40/20,381.49 = 11,790.66/x
  3. Step 3: Cross multiply
    14,750.40x = 20,381.49 × 11,790.66
  4. Step 4: Simplify right side
    14,750.40x = 240,311,218.88
  5. Step 5: Solve for x
    x = 240,311,218.88/14,750.40
  6. Step 6: Final answer
    x = 16,291.84

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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.