Home / 20,644.58-28,484.64-12,147.07

Finding the Fourth Proportional to 20,644.58, 28,484.64 and 12,147.07

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Solution

The fourth proportional to 20,644.58, 28,484.64 and 12,147.07 is: 16,760.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.58 : 28,484.64 = 12,147.07 : x
  2. Step 2: Convert to fraction form
    20,644.58/28,484.64 = 12,147.07/x
  3. Step 3: Cross multiply
    20,644.58x = 28,484.64 × 12,147.07
  4. Step 4: Simplify right side
    20,644.58x = 346,004,916.00
  5. Step 5: Solve for x
    x = 346,004,916.00/20,644.58
  6. Step 6: Final answer
    x = 16,760.09

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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.