Home / 20,673.34-28,527.55-11,722.21

Finding the Fourth Proportional to 20,673.34, 28,527.55 and 11,722.21

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Solution

The fourth proportional to 20,673.34, 28,527.55 and 11,722.21 is: 16,175.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.34 : 28,527.55 = 11,722.21 : x
  2. Step 2: Convert to fraction form
    20,673.34/28,527.55 = 11,722.21/x
  3. Step 3: Cross multiply
    20,673.34x = 28,527.55 × 11,722.21
  4. Step 4: Simplify right side
    20,673.34x = 334,405,931.89
  5. Step 5: Solve for x
    x = 334,405,931.89/20,673.34
  6. Step 6: Final answer
    x = 16,175.71

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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.