Home / 20,820.57-28,707.26-14,452.58

Finding the Fourth Proportional to 20,820.57, 28,707.26 and 14,452.58

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Solution

The fourth proportional to 20,820.57, 28,707.26 and 14,452.58 is: 19,927.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820.57 : 28,707.26 = 14,452.58 : x
  2. Step 2: Convert to fraction form
    20,820.57/28,707.26 = 14,452.58/x
  3. Step 3: Cross multiply
    20,820.57x = 28,707.26 × 14,452.58
  4. Step 4: Simplify right side
    20,820.57x = 414,893,755.93
  5. Step 5: Solve for x
    x = 414,893,755.93/20,820.57
  6. Step 6: Final answer
    x = 19,927.11

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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.