Home / 21,461.84-29,634.12-13,911.76

Finding the Fourth Proportional to 21,461.84, 29,634.12 and 13,911.76

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Solution

The fourth proportional to 21,461.84, 29,634.12 and 13,911.76 is: 19,209.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,461.84 : 29,634.12 = 13,911.76 : x
  2. Step 2: Convert to fraction form
    21,461.84/29,634.12 = 13,911.76/x
  3. Step 3: Cross multiply
    21,461.84x = 29,634.12 × 13,911.76
  4. Step 4: Simplify right side
    21,461.84x = 412,262,765.25
  5. Step 5: Solve for x
    x = 412,262,765.25/21,461.84
  6. Step 6: Final answer
    x = 19,209.11

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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.