Home / 12,930.75-19,397.25-3,570.78

Finding the Fourth Proportional to 12,930.75, 19,397.25 and 3,570.78

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Solution

The fourth proportional to 12,930.75, 19,397.25 and 3,570.78 is: 5,356.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930.75 : 19,397.25 = 3,570.78 : x
  2. Step 2: Convert to fraction form
    12,930.75/19,397.25 = 3,570.78/x
  3. Step 3: Cross multiply
    12,930.75x = 19,397.25 × 3,570.78
  4. Step 4: Simplify right side
    12,930.75x = 69,263,312.36
  5. Step 5: Solve for x
    x = 69,263,312.36/12,930.75
  6. Step 6: Final answer
    x = 5,356.48

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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.