Home / 18,786.40-28,178.16-4,935.04

Finding the Fourth Proportional to 18,786.40, 28,178.16 and 4,935.04

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Solution

The fourth proportional to 18,786.40, 28,178.16 and 4,935.04 is: 7,402.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.40 : 28,178.16 = 4,935.04 : x
  2. Step 2: Convert to fraction form
    18,786.40/28,178.16 = 4,935.04/x
  3. Step 3: Cross multiply
    18,786.40x = 28,178.16 × 4,935.04
  4. Step 4: Simplify right side
    18,786.40x = 139,060,346.73
  5. Step 5: Solve for x
    x = 139,060,346.73/18,786.40
  6. Step 6: Final answer
    x = 7,402.18

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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.