Home / 39,450.90-54,443.20-21,545.76

Finding the Fourth Proportional to 39,450.90, 54,443.20 and 21,545.76

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Solution

The fourth proportional to 39,450.90, 54,443.20 and 21,545.76 is: 29,733.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,450.90 : 54,443.20 = 21,545.76 : x
  2. Step 2: Convert to fraction form
    39,450.90/54,443.20 = 21,545.76/x
  3. Step 3: Cross multiply
    39,450.90x = 54,443.20 × 21,545.76
  4. Step 4: Simplify right side
    39,450.90x = 1,173,020,120.83
  5. Step 5: Solve for x
    x = 1,173,020,120.83/39,450.90
  6. Step 6: Final answer
    x = 29,733.67

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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.