Home / 28,710.48-43,009.56-18,819.57

Finding the Fourth Proportional to 28,710.48, 43,009.56 and 18,819.57

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Solution

The fourth proportional to 28,710.48, 43,009.56 and 18,819.57 is: 28,192.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,710.48 : 43,009.56 = 18,819.57 : x
  2. Step 2: Convert to fraction form
    28,710.48/43,009.56 = 18,819.57/x
  3. Step 3: Cross multiply
    28,710.48x = 43,009.56 × 18,819.57
  4. Step 4: Simplify right side
    28,710.48x = 809,421,425.09
  5. Step 5: Solve for x
    x = 809,421,425.09/28,710.48
  6. Step 6: Final answer
    x = 28,192.54

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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.