Home / 42,778.98-64,177.62-12,795.57

Finding the Fourth Proportional to 42,778.98, 64,177.62 and 12,795.57

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Solution

The fourth proportional to 42,778.98, 64,177.62 and 12,795.57 is: 19,196.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,778.98 : 64,177.62 = 12,795.57 : x
  2. Step 2: Convert to fraction form
    42,778.98/64,177.62 = 12,795.57/x
  3. Step 3: Cross multiply
    42,778.98x = 64,177.62 × 12,795.57
  4. Step 4: Simplify right side
    42,778.98x = 821,189,229.14
  5. Step 5: Solve for x
    x = 821,189,229.14/42,778.98
  6. Step 6: Final answer
    x = 19,196.09

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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.