Home / 28,771.84-43,162.68-13,190.80

Finding the Fourth Proportional to 28,771.84, 43,162.68 and 13,190.80

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Solution

The fourth proportional to 28,771.84, 43,162.68 and 13,190.80 is: 19,788.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,771.84 : 43,162.68 = 13,190.80 : x
  2. Step 2: Convert to fraction form
    28,771.84/43,162.68 = 13,190.80/x
  3. Step 3: Cross multiply
    28,771.84x = 43,162.68 × 13,190.80
  4. Step 4: Simplify right side
    28,771.84x = 569,350,279.34
  5. Step 5: Solve for x
    x = 569,350,279.34/28,771.84
  6. Step 6: Final answer
    x = 19,788.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.