Home / 20,650.05-28,501.61-13,577.13

Finding the Fourth Proportional to 20,650.05, 28,501.61 and 13,577.13

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Solution

The fourth proportional to 20,650.05, 28,501.61 and 13,577.13 is: 18,739.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.05 : 28,501.61 = 13,577.13 : x
  2. Step 2: Convert to fraction form
    20,650.05/28,501.61 = 13,577.13/x
  3. Step 3: Cross multiply
    20,650.05x = 28,501.61 × 13,577.13
  4. Step 4: Simplify right side
    20,650.05x = 386,969,996.29
  5. Step 5: Solve for x
    x = 386,969,996.29/20,650.05
  6. Step 6: Final answer
    x = 18,739.42

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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.