Home / 12,681.11-19,024.91-7,420.54

Finding the Fourth Proportional to 12,681.11, 19,024.91 and 7,420.54

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Solution

The fourth proportional to 12,681.11, 19,024.91 and 7,420.54 is: 11,132.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.11 : 19,024.91 = 7,420.54 : x
  2. Step 2: Convert to fraction form
    12,681.11/19,024.91 = 7,420.54/x
  3. Step 3: Cross multiply
    12,681.11x = 19,024.91 × 7,420.54
  4. Step 4: Simplify right side
    12,681.11x = 141,175,105.65
  5. Step 5: Solve for x
    x = 141,175,105.65/12,681.11
  6. Step 6: Final answer
    x = 11,132.71

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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.