Home / 18,611.87-25,685.67-10,545.45

Finding the Fourth Proportional to 18,611.87, 25,685.67 and 10,545.45

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Solution

The fourth proportional to 18,611.87, 25,685.67 and 10,545.45 is: 14,553.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.87 : 25,685.67 = 10,545.45 : x
  2. Step 2: Convert to fraction form
    18,611.87/25,685.67 = 10,545.45/x
  3. Step 3: Cross multiply
    18,611.87x = 25,685.67 × 10,545.45
  4. Step 4: Simplify right side
    18,611.87x = 270,866,948.70
  5. Step 5: Solve for x
    x = 270,866,948.70/18,611.87
  6. Step 6: Final answer
    x = 14,553.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.