Home / 13,722.85-18,927.08-11,811.92

Finding the Fourth Proportional to 13,722.85, 18,927.08 and 11,811.92

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Solution

The fourth proportional to 13,722.85, 18,927.08 and 11,811.92 is: 16,291.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.85 : 18,927.08 = 11,811.92 : x
  2. Step 2: Convert to fraction form
    13,722.85/18,927.08 = 11,811.92/x
  3. Step 3: Cross multiply
    13,722.85x = 18,927.08 × 11,811.92
  4. Step 4: Simplify right side
    13,722.85x = 223,565,095.27
  5. Step 5: Solve for x
    x = 223,565,095.27/13,722.85
  6. Step 6: Final answer
    x = 16,291.45

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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.