Home / 42,778.51-64,176.92-12,795.10

Finding the Fourth Proportional to 42,778.51, 64,176.92 and 12,795.10

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Solution

The fourth proportional to 42,778.51, 64,176.92 and 12,795.10 is: 19,195.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,778.51 : 64,176.92 = 12,795.10 : x
  2. Step 2: Convert to fraction form
    42,778.51/64,176.92 = 12,795.10/x
  3. Step 3: Cross multiply
    42,778.51x = 64,176.92 × 12,795.10
  4. Step 4: Simplify right side
    42,778.51x = 821,149,932.66
  5. Step 5: Solve for x
    x = 821,149,932.66/42,778.51
  6. Step 6: Final answer
    x = 19,195.39

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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.