Home / 20,124.47-27,771.86-12,575.18

Finding the Fourth Proportional to 20,124.47, 27,771.86 and 12,575.18

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Solution

The fourth proportional to 20,124.47, 27,771.86 and 12,575.18 is: 17,353.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.47 : 27,771.86 = 12,575.18 : x
  2. Step 2: Convert to fraction form
    20,124.47/27,771.86 = 12,575.18/x
  3. Step 3: Cross multiply
    20,124.47x = 27,771.86 × 12,575.18
  4. Step 4: Simplify right side
    20,124.47x = 349,236,239.30
  5. Step 5: Solve for x
    x = 349,236,239.30/20,124.47
  6. Step 6: Final answer
    x = 17,353.81

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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.