Home / 21,434.34-29,578.70-11,873.84

Finding the Fourth Proportional to 21,434.34, 29,578.70 and 11,873.84

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Solution

The fourth proportional to 21,434.34, 29,578.70 and 11,873.84 is: 16,385.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,434.34 : 29,578.70 = 11,873.84 : x
  2. Step 2: Convert to fraction form
    21,434.34/29,578.70 = 11,873.84/x
  3. Step 3: Cross multiply
    21,434.34x = 29,578.70 × 11,873.84
  4. Step 4: Simplify right side
    21,434.34x = 351,212,751.21
  5. Step 5: Solve for x
    x = 351,212,751.21/21,434.34
  6. Step 6: Final answer
    x = 16,385.52

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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.