Home / 20,681.64-28,550.34-13,233.96

Finding the Fourth Proportional to 20,681.64, 28,550.34 and 13,233.96

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Solution

The fourth proportional to 20,681.64, 28,550.34 and 13,233.96 is: 18,269.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.64 : 28,550.34 = 13,233.96 : x
  2. Step 2: Convert to fraction form
    20,681.64/28,550.34 = 13,233.96/x
  3. Step 3: Cross multiply
    20,681.64x = 28,550.34 × 13,233.96
  4. Step 4: Simplify right side
    20,681.64x = 377,834,057.55
  5. Step 5: Solve for x
    x = 377,834,057.55/20,681.64
  6. Step 6: Final answer
    x = 18,269.06

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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.