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Finding the Fourth Proportional to 16,811.18, 25,220.70 and 9,420.74

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Solution

The fourth proportional to 16,811.18, 25,220.70 and 9,420.74 is: 14,133.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,811.18 : 25,220.70 = 9,420.74 : x
  2. Step 2: Convert to fraction form
    16,811.18/25,220.70 = 9,420.74/x
  3. Step 3: Cross multiply
    16,811.18x = 25,220.70 × 9,420.74
  4. Step 4: Simplify right side
    16,811.18x = 237,597,531.21
  5. Step 5: Solve for x
    x = 237,597,531.21/16,811.18
  6. Step 6: Final answer
    x = 14,133.31

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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.