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Finding the Fourth Proportional to 30,300.66, 41,811.93 and 16,871.40

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Solution

The fourth proportional to 30,300.66, 41,811.93 and 16,871.40 is: 23,280.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,300.66 : 41,811.93 = 16,871.40 : x
  2. Step 2: Convert to fraction form
    30,300.66/41,811.93 = 16,871.40/x
  3. Step 3: Cross multiply
    30,300.66x = 41,811.93 × 16,871.40
  4. Step 4: Simplify right side
    30,300.66x = 705,425,795.80
  5. Step 5: Solve for x
    x = 705,425,795.80/30,300.66
  6. Step 6: Final answer
    x = 23,280.87

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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.