Home / 12,786.56-19,170.87-4,888.75

Finding the Fourth Proportional to 12,786.56, 19,170.87 and 4,888.75

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Solution

The fourth proportional to 12,786.56, 19,170.87 and 4,888.75 is: 7,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786.56 : 19,170.87 = 4,888.75 : x
  2. Step 2: Convert to fraction form
    12,786.56/19,170.87 = 4,888.75/x
  3. Step 3: Cross multiply
    12,786.56x = 19,170.87 × 4,888.75
  4. Step 4: Simplify right side
    12,786.56x = 93,721,590.71
  5. Step 5: Solve for x
    x = 93,721,590.71/12,786.56
  6. Step 6: Final answer
    x = 7,329.70

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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.