Home / 28,579.80-39,430.53-16,640.58

Finding the Fourth Proportional to 28,579.80, 39,430.53 and 16,640.58

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Solution

The fourth proportional to 28,579.80, 39,430.53 and 16,640.58 is: 22,958.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.80 : 39,430.53 = 16,640.58 : x
  2. Step 2: Convert to fraction form
    28,579.80/39,430.53 = 16,640.58/x
  3. Step 3: Cross multiply
    28,579.80x = 39,430.53 × 16,640.58
  4. Step 4: Simplify right side
    28,579.80x = 656,146,888.91
  5. Step 5: Solve for x
    x = 656,146,888.91/28,579.80
  6. Step 6: Final answer
    x = 22,958.41

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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.