Home / 13,545.03-20,318.55-3,685.08

Finding the Fourth Proportional to 13,545.03, 20,318.55 and 3,685.08

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Solution

The fourth proportional to 13,545.03, 20,318.55 and 3,685.08 is: 5,527.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.03 : 20,318.55 = 3,685.08 : x
  2. Step 2: Convert to fraction form
    13,545.03/20,318.55 = 3,685.08/x
  3. Step 3: Cross multiply
    13,545.03x = 20,318.55 × 3,685.08
  4. Step 4: Simplify right side
    13,545.03x = 74,875,482.23
  5. Step 5: Solve for x
    x = 74,875,482.23/13,545.03
  6. Step 6: Final answer
    x = 5,527.89

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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.