Home / 21,034.48-31,556.81-7,886.97

Finding the Fourth Proportional to 21,034.48, 31,556.81 and 7,886.97

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Solution

The fourth proportional to 21,034.48, 31,556.81 and 7,886.97 is: 11,832.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.48 : 31,556.81 = 7,886.97 : x
  2. Step 2: Convert to fraction form
    21,034.48/31,556.81 = 7,886.97/x
  3. Step 3: Cross multiply
    21,034.48x = 31,556.81 × 7,886.97
  4. Step 4: Simplify right side
    21,034.48x = 248,887,613.77
  5. Step 5: Solve for x
    x = 248,887,613.77/21,034.48
  6. Step 6: Final answer
    x = 11,832.36

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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.