Home / 28,351.50-42,529.05-8,631.51

Finding the Fourth Proportional to 28,351.50, 42,529.05 and 8,631.51

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Solution

The fourth proportional to 28,351.50, 42,529.05 and 8,631.51 is: 12,947.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,351.50 : 42,529.05 = 8,631.51 : x
  2. Step 2: Convert to fraction form
    28,351.50/42,529.05 = 8,631.51/x
  3. Step 3: Cross multiply
    28,351.50x = 42,529.05 × 8,631.51
  4. Step 4: Simplify right side
    28,351.50x = 367,089,920.37
  5. Step 5: Solve for x
    x = 367,089,920.37/28,351.50
  6. Step 6: Final answer
    x = 12,947.81

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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.