Home / 28,354.84-39,064.17-20,383.28

Finding the Fourth Proportional to 28,354.84, 39,064.17 and 20,383.28

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Solution

The fourth proportional to 28,354.84, 39,064.17 and 20,383.28 is: 28,081.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354.84 : 39,064.17 = 20,383.28 : x
  2. Step 2: Convert to fraction form
    28,354.84/39,064.17 = 20,383.28/x
  3. Step 3: Cross multiply
    28,354.84x = 39,064.17 × 20,383.28
  4. Step 4: Simplify right side
    28,354.84x = 796,255,915.08
  5. Step 5: Solve for x
    x = 796,255,915.08/28,354.84
  6. Step 6: Final answer
    x = 28,081.83

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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.