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Finding the Fourth Proportional to 19,230.76, 28,859.10 and 8,703.64

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Solution

The fourth proportional to 19,230.76, 28,859.10 and 8,703.64 is: 13,061.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,230.76 : 28,859.10 = 8,703.64 : x
  2. Step 2: Convert to fraction form
    19,230.76/28,859.10 = 8,703.64/x
  3. Step 3: Cross multiply
    19,230.76x = 28,859.10 × 8,703.64
  4. Step 4: Simplify right side
    19,230.76x = 251,179,217.12
  5. Step 5: Solve for x
    x = 251,179,217.12/19,230.76
  6. Step 6: Final answer
    x = 13,061.33

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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.