Home / 20,600.09-28,400.64-16,365.21

Finding the Fourth Proportional to 20,600.09, 28,400.64 and 16,365.21

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Solution

The fourth proportional to 20,600.09, 28,400.64 and 16,365.21 is: 22,562.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.09 : 28,400.64 = 16,365.21 : x
  2. Step 2: Convert to fraction form
    20,600.09/28,400.64 = 16,365.21/x
  3. Step 3: Cross multiply
    20,600.09x = 28,400.64 × 16,365.21
  4. Step 4: Simplify right side
    20,600.09x = 464,782,437.73
  5. Step 5: Solve for x
    x = 464,782,437.73/20,600.09
  6. Step 6: Final answer
    x = 22,562.16

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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.