Home / 14,178.42-21,270.72-5,415.84

Finding the Fourth Proportional to 14,178.42, 21,270.72 and 5,415.84

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Solution

The fourth proportional to 14,178.42, 21,270.72 and 5,415.84 is: 8,124.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,178.42 : 21,270.72 = 5,415.84 : x
  2. Step 2: Convert to fraction form
    14,178.42/21,270.72 = 5,415.84/x
  3. Step 3: Cross multiply
    14,178.42x = 21,270.72 × 5,415.84
  4. Step 4: Simplify right side
    14,178.42x = 115,198,816.20
  5. Step 5: Solve for x
    x = 115,198,816.20/14,178.42
  6. Step 6: Final answer
    x = 8,124.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.