Home / 18,686.84-25,786.53-10,511.66

Finding the Fourth Proportional to 18,686.84, 25,786.53 and 10,511.66

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Solution

The fourth proportional to 18,686.84, 25,786.53 and 10,511.66 is: 14,505.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.84 : 25,786.53 = 10,511.66 : x
  2. Step 2: Convert to fraction form
    18,686.84/25,786.53 = 10,511.66/x
  3. Step 3: Cross multiply
    18,686.84x = 25,786.53 × 10,511.66
  4. Step 4: Simplify right side
    18,686.84x = 271,059,300.41
  5. Step 5: Solve for x
    x = 271,059,300.41/18,686.84
  6. Step 6: Final answer
    x = 14,505.36

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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.