Home / 22,254.40-30,714.32-12,821.12

Finding the Fourth Proportional to 22,254.40, 30,714.32 and 12,821.12

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Solution

The fourth proportional to 22,254.40, 30,714.32 and 12,821.12 is: 17,695.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,254.40 : 30,714.32 = 12,821.12 : x
  2. Step 2: Convert to fraction form
    22,254.40/30,714.32 = 12,821.12/x
  3. Step 3: Cross multiply
    22,254.40x = 30,714.32 × 12,821.12
  4. Step 4: Simplify right side
    22,254.40x = 393,791,982.44
  5. Step 5: Solve for x
    x = 393,791,982.44/22,254.40
  6. Step 6: Final answer
    x = 17,695.02

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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.