Home / 20,760.83-28,649.90-11,685.45

Finding the Fourth Proportional to 20,760.83, 28,649.90 and 11,685.45

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Solution

The fourth proportional to 20,760.83, 28,649.90 and 11,685.45 is: 16,125.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.83 : 28,649.90 = 11,685.45 : x
  2. Step 2: Convert to fraction form
    20,760.83/28,649.90 = 11,685.45/x
  3. Step 3: Cross multiply
    20,760.83x = 28,649.90 × 11,685.45
  4. Step 4: Simplify right side
    20,760.83x = 334,786,915.53
  5. Step 5: Solve for x
    x = 334,786,915.53/20,760.83
  6. Step 6: Final answer
    x = 16,125.90

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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.