Home / 21,025.17-28,992.13-20,714.94

Finding the Fourth Proportional to 21,025.17, 28,992.13 and 20,714.94

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Solution

The fourth proportional to 21,025.17, 28,992.13 and 20,714.94 is: 28,564.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.17 : 28,992.13 = 20,714.94 : x
  2. Step 2: Convert to fraction form
    21,025.17/28,992.13 = 20,714.94/x
  3. Step 3: Cross multiply
    21,025.17x = 28,992.13 × 20,714.94
  4. Step 4: Simplify right side
    21,025.17x = 600,570,181.63
  5. Step 5: Solve for x
    x = 600,570,181.63/21,025.17
  6. Step 6: Final answer
    x = 28,564.34

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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.