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Finding the Fourth Proportional to 30,387.88, 41,935.70 and 16,777.44

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Solution

The fourth proportional to 30,387.88, 41,935.70 and 16,777.44 is: 23,153.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,387.88 : 41,935.70 = 16,777.44 : x
  2. Step 2: Convert to fraction form
    30,387.88/41,935.70 = 16,777.44/x
  3. Step 3: Cross multiply
    30,387.88x = 41,935.70 × 16,777.44
  4. Step 4: Simplify right side
    30,387.88x = 703,573,690.61
  5. Step 5: Solve for x
    x = 703,573,690.61/30,387.88
  6. Step 6: Final answer
    x = 23,153.10

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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.