Home / 20,415.34-28,176.09-11,463.46

Finding the Fourth Proportional to 20,415.34, 28,176.09 and 11,463.46

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Solution

The fourth proportional to 20,415.34, 28,176.09 and 11,463.46 is: 15,821.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.34 : 28,176.09 = 11,463.46 : x
  2. Step 2: Convert to fraction form
    20,415.34/28,176.09 = 11,463.46/x
  3. Step 3: Cross multiply
    20,415.34x = 28,176.09 × 11,463.46
  4. Step 4: Simplify right side
    20,415.34x = 322,995,367.24
  5. Step 5: Solve for x
    x = 322,995,367.24/20,415.34
  6. Step 6: Final answer
    x = 15,821.21

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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.