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Finding the Fourth Proportional to 19,270.82, 28,920.82 and 8,889.86

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Solution

The fourth proportional to 19,270.82, 28,920.82 and 8,889.86 is: 13,341.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,270.82 : 28,920.82 = 8,889.86 : x
  2. Step 2: Convert to fraction form
    19,270.82/28,920.82 = 8,889.86/x
  3. Step 3: Cross multiply
    19,270.82x = 28,920.82 × 8,889.86
  4. Step 4: Simplify right side
    19,270.82x = 257,102,040.89
  5. Step 5: Solve for x
    x = 257,102,040.89/19,270.82
  6. Step 6: Final answer
    x = 13,341.52

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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.