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Finding the Fourth Proportional to 19,438.85, 29,151.12 and 6,955.49

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Solution

The fourth proportional to 19,438.85, 29,151.12 and 6,955.49 is: 10,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,438.85 : 29,151.12 = 6,955.49 : x
  2. Step 2: Convert to fraction form
    19,438.85/29,151.12 = 6,955.49/x
  3. Step 3: Cross multiply
    19,438.85x = 29,151.12 × 6,955.49
  4. Step 4: Simplify right side
    19,438.85x = 202,760,323.65
  5. Step 5: Solve for x
    x = 202,760,323.65/19,438.85
  6. Step 6: Final answer
    x = 10,430.67

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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.