Home / 28,834.93-39,769.82-18,220.69

Finding the Fourth Proportional to 28,834.93, 39,769.82 and 18,220.69

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Solution

The fourth proportional to 28,834.93, 39,769.82 and 18,220.69 is: 25,130.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,834.93 : 39,769.82 = 18,220.69 : x
  2. Step 2: Convert to fraction form
    28,834.93/39,769.82 = 18,220.69/x
  3. Step 3: Cross multiply
    28,834.93x = 39,769.82 × 18,220.69
  4. Step 4: Simplify right side
    28,834.93x = 724,633,470.47
  5. Step 5: Solve for x
    x = 724,633,470.47/28,834.93
  6. Step 6: Final answer
    x = 25,130.41

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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.