Home / 21,347.99-29,460.68-11,787.85

Finding the Fourth Proportional to 21,347.99, 29,460.68 and 11,787.85

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Solution

The fourth proportional to 21,347.99, 29,460.68 and 11,787.85 is: 16,267.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.99 : 29,460.68 = 11,787.85 : x
  2. Step 2: Convert to fraction form
    21,347.99/29,460.68 = 11,787.85/x
  3. Step 3: Cross multiply
    21,347.99x = 29,460.68 × 11,787.85
  4. Step 4: Simplify right side
    21,347.99x = 347,278,076.74
  5. Step 5: Solve for x
    x = 347,278,076.74/21,347.99
  6. Step 6: Final answer
    x = 16,267.48

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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.