Home / 21,042.32-31,566.48-6,997.72

Finding the Fourth Proportional to 21,042.32, 31,566.48 and 6,997.72

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Solution

The fourth proportional to 21,042.32, 31,566.48 and 6,997.72 is: 10,497.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.32 : 31,566.48 = 6,997.72 : x
  2. Step 2: Convert to fraction form
    21,042.32/31,566.48 = 6,997.72/x
  3. Step 3: Cross multiply
    21,042.32x = 31,566.48 × 6,997.72
  4. Step 4: Simplify right side
    21,042.32x = 220,893,388.43
  5. Step 5: Solve for x
    x = 220,893,388.43/21,042.32
  6. Step 6: Final answer
    x = 10,497.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.