Home / 18,420.68-27,605.06-13,806.92

Finding the Fourth Proportional to 18,420.68, 27,605.06 and 13,806.92

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Solution

The fourth proportional to 18,420.68, 27,605.06 and 13,806.92 is: 20,690.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.68 : 27,605.06 = 13,806.92 : x
  2. Step 2: Convert to fraction form
    18,420.68/27,605.06 = 13,806.92/x
  3. Step 3: Cross multiply
    18,420.68x = 27,605.06 × 13,806.92
  4. Step 4: Simplify right side
    18,420.68x = 381,140,855.02
  5. Step 5: Solve for x
    x = 381,140,855.02/18,420.68
  6. Step 6: Final answer
    x = 20,690.92

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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.