Home / 13,151.55-19,730.09-3,791.55

Finding the Fourth Proportional to 13,151.55, 19,730.09 and 3,791.55

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Solution

The fourth proportional to 13,151.55, 19,730.09 and 3,791.55 is: 5,688.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.55 : 19,730.09 = 3,791.55 : x
  2. Step 2: Convert to fraction form
    13,151.55/19,730.09 = 3,791.55/x
  3. Step 3: Cross multiply
    13,151.55x = 19,730.09 × 3,791.55
  4. Step 4: Simplify right side
    13,151.55x = 74,807,603.78
  5. Step 5: Solve for x
    x = 74,807,603.78/13,151.55
  6. Step 6: Final answer
    x = 5,688.12

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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.