Home / 12,930.21-19,395.43-3,570.75

Finding the Fourth Proportional to 12,930.21, 19,395.43 and 3,570.75

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Solution

The fourth proportional to 12,930.21, 19,395.43 and 3,570.75 is: 5,356.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930.21 : 19,395.43 = 3,570.75 : x
  2. Step 2: Convert to fraction form
    12,930.21/19,395.43 = 3,570.75/x
  3. Step 3: Cross multiply
    12,930.21x = 19,395.43 × 3,570.75
  4. Step 4: Simplify right side
    12,930.21x = 69,256,222.75
  5. Step 5: Solve for x
    x = 69,256,222.75/12,930.21
  6. Step 6: Final answer
    x = 5,356.16

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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.