Home / 20,666.70-28,525.23-11,719.55

Finding the Fourth Proportional to 20,666.70, 28,525.23 and 11,719.55

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Solution

The fourth proportional to 20,666.70, 28,525.23 and 11,719.55 is: 16,175.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.70 : 28,525.23 = 11,719.55 : x
  2. Step 2: Convert to fraction form
    20,666.70/28,525.23 = 11,719.55/x
  3. Step 3: Cross multiply
    20,666.70x = 28,525.23 × 11,719.55
  4. Step 4: Simplify right side
    20,666.70x = 334,302,930.56
  5. Step 5: Solve for x
    x = 334,302,930.56/20,666.70
  6. Step 6: Final answer
    x = 16,175.92

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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.