Home / 20,803.04-28,708.64-11,372.48

Finding the Fourth Proportional to 20,803.04, 28,708.64 and 11,372.48

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Solution

The fourth proportional to 20,803.04, 28,708.64 and 11,372.48 is: 15,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.04 : 28,708.64 = 11,372.48 : x
  2. Step 2: Convert to fraction form
    20,803.04/28,708.64 = 11,372.48/x
  3. Step 3: Cross multiply
    20,803.04x = 28,708.64 × 11,372.48
  4. Step 4: Simplify right side
    20,803.04x = 326,488,434.23
  5. Step 5: Solve for x
    x = 326,488,434.23/20,803.04
  6. Step 6: Final answer
    x = 15,694.27

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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.