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Finding the Fourth Proportional to 14,728.90, 20,325.79 and 8,014.55

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Solution

The fourth proportional to 14,728.90, 20,325.79 and 8,014.55 is: 11,060.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,728.90 : 20,325.79 = 8,014.55 : x
  2. Step 2: Convert to fraction form
    14,728.90/20,325.79 = 8,014.55/x
  3. Step 3: Cross multiply
    14,728.90x = 20,325.79 × 8,014.55
  4. Step 4: Simplify right side
    14,728.90x = 162,902,060.24
  5. Step 5: Solve for x
    x = 162,902,060.24/14,728.90
  6. Step 6: Final answer
    x = 11,060.03

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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.