Home / 28,609.38-39,480.42-16,509.78

Finding the Fourth Proportional to 28,609.38, 39,480.42 and 16,509.78

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Solution

The fourth proportional to 28,609.38, 39,480.42 and 16,509.78 is: 22,783.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,609.38 : 39,480.42 = 16,509.78 : x
  2. Step 2: Convert to fraction form
    28,609.38/39,480.42 = 16,509.78/x
  3. Step 3: Cross multiply
    28,609.38x = 39,480.42 × 16,509.78
  4. Step 4: Simplify right side
    28,609.38x = 651,813,048.51
  5. Step 5: Solve for x
    x = 651,813,048.51/28,609.38
  6. Step 6: Final answer
    x = 22,783.19

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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.