Home / 28,512.72-42,771.36-9,785.22

Finding the Fourth Proportional to 28,512.72, 42,771.36 and 9,785.22

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Solution

The fourth proportional to 28,512.72, 42,771.36 and 9,785.22 is: 14,678.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.72 : 42,771.36 = 9,785.22 : x
  2. Step 2: Convert to fraction form
    28,512.72/42,771.36 = 9,785.22/x
  3. Step 3: Cross multiply
    28,512.72x = 42,771.36 × 9,785.22
  4. Step 4: Simplify right side
    28,512.72x = 418,527,167.30
  5. Step 5: Solve for x
    x = 418,527,167.30/28,512.72
  6. Step 6: Final answer
    x = 14,678.61

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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.