Home / 20,419.59-28,176.94-11,467.02

Finding the Fourth Proportional to 20,419.59, 28,176.94 and 11,467.02

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Solution

The fourth proportional to 20,419.59, 28,176.94 and 11,467.02 is: 15,823.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.59 : 28,176.94 = 11,467.02 : x
  2. Step 2: Convert to fraction form
    20,419.59/28,176.94 = 11,467.02/x
  3. Step 3: Cross multiply
    20,419.59x = 28,176.94 × 11,467.02
  4. Step 4: Simplify right side
    20,419.59x = 323,105,576.29
  5. Step 5: Solve for x
    x = 323,105,576.29/20,419.59
  6. Step 6: Final answer
    x = 15,823.31

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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.