Home / 13,545.68-20,318.54-3,685.05

Finding the Fourth Proportional to 13,545.68, 20,318.54 and 3,685.05

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Solution

The fourth proportional to 13,545.68, 20,318.54 and 3,685.05 is: 5,527.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.68 : 20,318.54 = 3,685.05 : x
  2. Step 2: Convert to fraction form
    13,545.68/20,318.54 = 3,685.05/x
  3. Step 3: Cross multiply
    13,545.68x = 20,318.54 × 3,685.05
  4. Step 4: Simplify right side
    13,545.68x = 74,874,817.40
  5. Step 5: Solve for x
    x = 74,874,817.40/13,545.68
  6. Step 6: Final answer
    x = 5,527.58

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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.