Home / 20,835.34-28,752.04-11,885.72

Finding the Fourth Proportional to 20,835.34, 28,752.04 and 11,885.72

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Solution

The fourth proportional to 20,835.34, 28,752.04 and 11,885.72 is: 16,401.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.34 : 28,752.04 = 11,885.72 : x
  2. Step 2: Convert to fraction form
    20,835.34/28,752.04 = 11,885.72/x
  3. Step 3: Cross multiply
    20,835.34x = 28,752.04 × 11,885.72
  4. Step 4: Simplify right side
    20,835.34x = 341,738,696.87
  5. Step 5: Solve for x
    x = 341,738,696.87/20,835.34
  6. Step 6: Final answer
    x = 16,401.88

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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.