Home / 20,658.84-28,496.43-18,012.57

Finding the Fourth Proportional to 20,658.84, 28,496.43 and 18,012.57

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Solution

The fourth proportional to 20,658.84, 28,496.43 and 18,012.57 is: 24,846.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.84 : 28,496.43 = 18,012.57 : x
  2. Step 2: Convert to fraction form
    20,658.84/28,496.43 = 18,012.57/x
  3. Step 3: Cross multiply
    20,658.84x = 28,496.43 × 18,012.57
  4. Step 4: Simplify right side
    20,658.84x = 513,293,940.13
  5. Step 5: Solve for x
    x = 513,293,940.13/20,658.84
  6. Step 6: Final answer
    x = 24,846.21

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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.