Home / 20,423.34-28,180.58-11,471.22

Finding the Fourth Proportional to 20,423.34, 28,180.58 and 11,471.22

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Solution

The fourth proportional to 20,423.34, 28,180.58 and 11,471.22 is: 15,828.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.34 : 28,180.58 = 11,471.22 : x
  2. Step 2: Convert to fraction form
    20,423.34/28,180.58 = 11,471.22/x
  3. Step 3: Cross multiply
    20,423.34x = 28,180.58 × 11,471.22
  4. Step 4: Simplify right side
    20,423.34x = 323,265,575.55
  5. Step 5: Solve for x
    x = 323,265,575.55/20,423.34
  6. Step 6: Final answer
    x = 15,828.24

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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.