Home / 21,089.69-29,102.76-11,530.07

Finding the Fourth Proportional to 21,089.69, 29,102.76 and 11,530.07

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Solution

The fourth proportional to 21,089.69, 29,102.76 and 11,530.07 is: 15,910.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.69 : 29,102.76 = 11,530.07 : x
  2. Step 2: Convert to fraction form
    21,089.69/29,102.76 = 11,530.07/x
  3. Step 3: Cross multiply
    21,089.69x = 29,102.76 × 11,530.07
  4. Step 4: Simplify right side
    21,089.69x = 335,556,714.48
  5. Step 5: Solve for x
    x = 335,556,714.48/21,089.69
  6. Step 6: Final answer
    x = 15,910.94

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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.