Home / 20,124.72-27,772.21-12,575.43

Finding the Fourth Proportional to 20,124.72, 27,772.21 and 12,575.43

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Solution

The fourth proportional to 20,124.72, 27,772.21 and 12,575.43 is: 17,354.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.72 : 27,772.21 = 12,575.43 : x
  2. Step 2: Convert to fraction form
    20,124.72/27,772.21 = 12,575.43/x
  3. Step 3: Cross multiply
    20,124.72x = 27,772.21 × 12,575.43
  4. Step 4: Simplify right side
    20,124.72x = 349,247,520.79
  5. Step 5: Solve for x
    x = 349,247,520.79/20,124.72
  6. Step 6: Final answer
    x = 17,354.16

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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.