Home / 20,404.80-28,164.56-13,332.24

Finding the Fourth Proportional to 20,404.80, 28,164.56 and 13,332.24

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Solution

The fourth proportional to 20,404.80, 28,164.56 and 13,332.24 is: 18,402.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.80 : 28,164.56 = 13,332.24 : x
  2. Step 2: Convert to fraction form
    20,404.80/28,164.56 = 13,332.24/x
  3. Step 3: Cross multiply
    20,404.80x = 28,164.56 × 13,332.24
  4. Step 4: Simplify right side
    20,404.80x = 375,496,673.41
  5. Step 5: Solve for x
    x = 375,496,673.41/20,404.80
  6. Step 6: Final answer
    x = 18,402.37

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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.