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Finding the Fourth Proportional to 14,858.98, 20,506.69 and 8,145.90

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Solution

The fourth proportional to 14,858.98, 20,506.69 and 8,145.90 is: 11,242.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,858.98 : 20,506.69 = 8,145.90 : x
  2. Step 2: Convert to fraction form
    14,858.98/20,506.69 = 8,145.90/x
  3. Step 3: Cross multiply
    14,858.98x = 20,506.69 × 8,145.90
  4. Step 4: Simplify right side
    14,858.98x = 167,045,456.25
  5. Step 5: Solve for x
    x = 167,045,456.25/14,858.98
  6. Step 6: Final answer
    x = 11,242.06

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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.