Home / 20,650.43-28,502.13-13,577.51

Finding the Fourth Proportional to 20,650.43, 28,502.13 and 13,577.51

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Solution

The fourth proportional to 20,650.43, 28,502.13 and 13,577.51 is: 18,739.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.43 : 28,502.13 = 13,577.51 : x
  2. Step 2: Convert to fraction form
    20,650.43/28,502.13 = 13,577.51/x
  3. Step 3: Cross multiply
    20,650.43x = 28,502.13 × 13,577.51
  4. Step 4: Simplify right side
    20,650.43x = 386,987,812.59
  5. Step 5: Solve for x
    x = 386,987,812.59/20,650.43
  6. Step 6: Final answer
    x = 18,739.94

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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.