Home / 13,147.36-19,730.55-5,143.31

Finding the Fourth Proportional to 13,147.36, 19,730.55 and 5,143.31

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Solution

The fourth proportional to 13,147.36, 19,730.55 and 5,143.31 is: 7,718.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.36 : 19,730.55 = 5,143.31 : x
  2. Step 2: Convert to fraction form
    13,147.36/19,730.55 = 5,143.31/x
  3. Step 3: Cross multiply
    13,147.36x = 19,730.55 × 5,143.31
  4. Step 4: Simplify right side
    13,147.36x = 101,480,280.42
  5. Step 5: Solve for x
    x = 101,480,280.42/13,147.36
  6. Step 6: Final answer
    x = 7,718.68

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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.