Home / 20,324.05-28,045.24-12,666.58

Finding the Fourth Proportional to 20,324.05, 28,045.24 and 12,666.58

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Solution

The fourth proportional to 20,324.05, 28,045.24 and 12,666.58 is: 17,478.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324.05 : 28,045.24 = 12,666.58 : x
  2. Step 2: Convert to fraction form
    20,324.05/28,045.24 = 12,666.58/x
  3. Step 3: Cross multiply
    20,324.05x = 28,045.24 × 12,666.58
  4. Step 4: Simplify right side
    20,324.05x = 355,237,174.30
  5. Step 5: Solve for x
    x = 355,237,174.30/20,324.05
  6. Step 6: Final answer
    x = 17,478.66

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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.