Home / 42,819.39-64,235.25-13,239.54

Finding the Fourth Proportional to 42,819.39, 64,235.25 and 13,239.54

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Solution

The fourth proportional to 42,819.39, 64,235.25 and 13,239.54 is: 19,861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,819.39 : 64,235.25 = 13,239.54 : x
  2. Step 2: Convert to fraction form
    42,819.39/64,235.25 = 13,239.54/x
  3. Step 3: Cross multiply
    42,819.39x = 64,235.25 × 13,239.54
  4. Step 4: Simplify right side
    42,819.39x = 850,445,161.79
  5. Step 5: Solve for x
    x = 850,445,161.79/42,819.39
  6. Step 6: Final answer
    x = 19,861.22

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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.