Home / 21,180.76-29,230.58-11,749.08

Finding the Fourth Proportional to 21,180.76, 29,230.58 and 11,749.08

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Solution

The fourth proportional to 21,180.76, 29,230.58 and 11,749.08 is: 16,214.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.76 : 29,230.58 = 11,749.08 : x
  2. Step 2: Convert to fraction form
    21,180.76/29,230.58 = 11,749.08/x
  3. Step 3: Cross multiply
    21,180.76x = 29,230.58 × 11,749.08
  4. Step 4: Simplify right side
    21,180.76x = 343,432,422.87
  5. Step 5: Solve for x
    x = 343,432,422.87/21,180.76
  6. Step 6: Final answer
    x = 16,214.36

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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.