Home / 21,042.36-31,556.70-6,998.61

Finding the Fourth Proportional to 21,042.36, 31,556.70 and 6,998.61

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Solution

The fourth proportional to 21,042.36, 31,556.70 and 6,998.61 is: 10,495.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.36 : 31,556.70 = 6,998.61 : x
  2. Step 2: Convert to fraction form
    21,042.36/31,556.70 = 6,998.61/x
  3. Step 3: Cross multiply
    21,042.36x = 31,556.70 × 6,998.61
  4. Step 4: Simplify right side
    21,042.36x = 220,853,036.19
  5. Step 5: Solve for x
    x = 220,853,036.19/21,042.36
  6. Step 6: Final answer
    x = 10,495.64

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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.