Home / 13,639.86-20,452.91-5,313.47

Finding the Fourth Proportional to 13,639.86, 20,452.91 and 5,313.47

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Solution

The fourth proportional to 13,639.86, 20,452.91 and 5,313.47 is: 7,967.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.86 : 20,452.91 = 5,313.47 : x
  2. Step 2: Convert to fraction form
    13,639.86/20,452.91 = 5,313.47/x
  3. Step 3: Cross multiply
    13,639.86x = 20,452.91 × 5,313.47
  4. Step 4: Simplify right side
    13,639.86x = 108,675,794.87
  5. Step 5: Solve for x
    x = 108,675,794.87/13,639.86
  6. Step 6: Final answer
    x = 7,967.52

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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.