Home / 28,725.69-39,628.49-16,783.66

Finding the Fourth Proportional to 28,725.69, 39,628.49 and 16,783.66

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Solution

The fourth proportional to 28,725.69, 39,628.49 and 16,783.66 is: 23,153.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,725.69 : 39,628.49 = 16,783.66 : x
  2. Step 2: Convert to fraction form
    28,725.69/39,628.49 = 16,783.66/x
  3. Step 3: Cross multiply
    28,725.69x = 39,628.49 × 16,783.66
  4. Step 4: Simplify right side
    28,725.69x = 665,111,045.36
  5. Step 5: Solve for x
    x = 665,111,045.36/28,725.69
  6. Step 6: Final answer
    x = 23,153.88

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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.