Home / 20,645.43-28,495.22-13,572.51

Finding the Fourth Proportional to 20,645.43, 28,495.22 and 13,572.51

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Solution

The fourth proportional to 20,645.43, 28,495.22 and 13,572.51 is: 18,733.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.43 : 28,495.22 = 13,572.51 : x
  2. Step 2: Convert to fraction form
    20,645.43/28,495.22 = 13,572.51/x
  3. Step 3: Cross multiply
    20,645.43x = 28,495.22 × 13,572.51
  4. Step 4: Simplify right side
    20,645.43x = 386,751,658.40
  5. Step 5: Solve for x
    x = 386,751,658.40/20,645.43
  6. Step 6: Final answer
    x = 18,733.04

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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.