Home / 13,647.39-20,471.33-4,287.23

Finding the Fourth Proportional to 13,647.39, 20,471.33 and 4,287.23

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Solution

The fourth proportional to 13,647.39, 20,471.33 and 4,287.23 is: 6,430.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,647.39 : 20,471.33 = 4,287.23 : x
  2. Step 2: Convert to fraction form
    13,647.39/20,471.33 = 4,287.23/x
  3. Step 3: Cross multiply
    13,647.39x = 20,471.33 × 4,287.23
  4. Step 4: Simplify right side
    13,647.39x = 87,765,285.24
  5. Step 5: Solve for x
    x = 87,765,285.24/13,647.39
  6. Step 6: Final answer
    x = 6,430.92

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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.