Home / 28,785.53-39,725.12-16,686.41

Finding the Fourth Proportional to 28,785.53, 39,725.12 and 16,686.41

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Solution

The fourth proportional to 28,785.53, 39,725.12 and 16,686.41 is: 23,027.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.53 : 39,725.12 = 16,686.41 : x
  2. Step 2: Convert to fraction form
    28,785.53/39,725.12 = 16,686.41/x
  3. Step 3: Cross multiply
    28,785.53x = 39,725.12 × 16,686.41
  4. Step 4: Simplify right side
    28,785.53x = 662,869,357.56
  5. Step 5: Solve for x
    x = 662,869,357.56/28,785.53
  6. Step 6: Final answer
    x = 23,027.87

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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.