Home / 20,284.56-27,975.24-13,208.40

Finding the Fourth Proportional to 20,284.56, 27,975.24 and 13,208.40

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Solution

The fourth proportional to 20,284.56, 27,975.24 and 13,208.40 is: 18,216.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.56 : 27,975.24 = 13,208.40 : x
  2. Step 2: Convert to fraction form
    20,284.56/27,975.24 = 13,208.40/x
  3. Step 3: Cross multiply
    20,284.56x = 27,975.24 × 13,208.40
  4. Step 4: Simplify right side
    20,284.56x = 369,508,160.02
  5. Step 5: Solve for x
    x = 369,508,160.02/20,284.56
  6. Step 6: Final answer
    x = 18,216.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.