Home / 28,785.56-43,184.16-12,145.64

Finding the Fourth Proportional to 28,785.56, 43,184.16 and 12,145.64

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Solution

The fourth proportional to 28,785.56, 43,184.16 and 12,145.64 is: 18,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.56 : 43,184.16 = 12,145.64 : x
  2. Step 2: Convert to fraction form
    28,785.56/43,184.16 = 12,145.64/x
  3. Step 3: Cross multiply
    28,785.56x = 43,184.16 × 12,145.64
  4. Step 4: Simplify right side
    28,785.56x = 524,499,045.14
  5. Step 5: Solve for x
    x = 524,499,045.14/28,785.56
  6. Step 6: Final answer
    x = 18,220.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.