Home / 20,824.64-28,752.24-15,448.48

Finding the Fourth Proportional to 20,824.64, 28,752.24 and 15,448.48

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Solution

The fourth proportional to 20,824.64, 28,752.24 and 15,448.48 is: 21,329.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.64 : 28,752.24 = 15,448.48 : x
  2. Step 2: Convert to fraction form
    20,824.64/28,752.24 = 15,448.48/x
  3. Step 3: Cross multiply
    20,824.64x = 28,752.24 × 15,448.48
  4. Step 4: Simplify right side
    20,824.64x = 444,178,404.60
  5. Step 5: Solve for x
    x = 444,178,404.60/20,824.64
  6. Step 6: Final answer
    x = 21,329.46

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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.