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Finding the Fourth Proportional to 30,950.88, 42,711.98 and 16,803.44

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Solution

The fourth proportional to 30,950.88, 42,711.98 and 16,803.44 is: 23,188.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,950.88 : 42,711.98 = 16,803.44 : x
  2. Step 2: Convert to fraction form
    30,950.88/42,711.98 = 16,803.44/x
  3. Step 3: Cross multiply
    30,950.88x = 42,711.98 × 16,803.44
  4. Step 4: Simplify right side
    30,950.88x = 717,708,193.21
  5. Step 5: Solve for x
    x = 717,708,193.21/30,950.88
  6. Step 6: Final answer
    x = 23,188.62

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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.