Home / 20,650.18-28,501.79-13,577.26

Finding the Fourth Proportional to 20,650.18, 28,501.79 and 13,577.26

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Solution

The fourth proportional to 20,650.18, 28,501.79 and 13,577.26 is: 18,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.18 : 28,501.79 = 13,577.26 : x
  2. Step 2: Convert to fraction form
    20,650.18/28,501.79 = 13,577.26/x
  3. Step 3: Cross multiply
    20,650.18x = 28,501.79 × 13,577.26
  4. Step 4: Simplify right side
    20,650.18x = 386,976,213.30
  5. Step 5: Solve for x
    x = 386,976,213.30/20,650.18
  6. Step 6: Final answer
    x = 18,739.60

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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.