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Finding the Fourth Proportional to 19,149.92, 28,715.65 and 6,669.67

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Solution

The fourth proportional to 19,149.92, 28,715.65 and 6,669.67 is: 10,001.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,149.92 : 28,715.65 = 6,669.67 : x
  2. Step 2: Convert to fraction form
    19,149.92/28,715.65 = 6,669.67/x
  3. Step 3: Cross multiply
    19,149.92x = 28,715.65 × 6,669.67
  4. Step 4: Simplify right side
    19,149.92x = 191,523,822.09
  5. Step 5: Solve for x
    x = 191,523,822.09/19,149.92
  6. Step 6: Final answer
    x = 10,001.29

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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.