Home / 13,545.50-20,271.69-8,545.57

Finding the Fourth Proportional to 13,545.50, 20,271.69 and 8,545.57

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Solution

The fourth proportional to 13,545.50, 20,271.69 and 8,545.57 is: 12,788.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.50 : 20,271.69 = 8,545.57 : x
  2. Step 2: Convert to fraction form
    13,545.50/20,271.69 = 8,545.57/x
  3. Step 3: Cross multiply
    13,545.50x = 20,271.69 × 8,545.57
  4. Step 4: Simplify right side
    13,545.50x = 173,233,119.27
  5. Step 5: Solve for x
    x = 173,233,119.27/13,545.50
  6. Step 6: Final answer
    x = 12,788.98

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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.