Home / 13,810.68-20,718.69-5,489.13

Finding the Fourth Proportional to 13,810.68, 20,718.69 and 5,489.13

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Solution

The fourth proportional to 13,810.68, 20,718.69 and 5,489.13 is: 8,234.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,810.68 : 20,718.69 = 5,489.13 : x
  2. Step 2: Convert to fraction form
    13,810.68/20,718.69 = 5,489.13/x
  3. Step 3: Cross multiply
    13,810.68x = 20,718.69 × 5,489.13
  4. Step 4: Simplify right side
    13,810.68x = 113,727,582.84
  5. Step 5: Solve for x
    x = 113,727,582.84/13,810.68
  6. Step 6: Final answer
    x = 8,234.76

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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.