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Finding the Fourth Proportional to 14,687.90, 20,269.46 and 7,973.60

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Solution

The fourth proportional to 14,687.90, 20,269.46 and 7,973.60 is: 11,003.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.90 : 20,269.46 = 7,973.60 : x
  2. Step 2: Convert to fraction form
    14,687.90/20,269.46 = 7,973.60/x
  3. Step 3: Cross multiply
    14,687.90x = 20,269.46 × 7,973.60
  4. Step 4: Simplify right side
    14,687.90x = 161,620,566.26
  5. Step 5: Solve for x
    x = 161,620,566.26/14,687.90
  6. Step 6: Final answer
    x = 11,003.65

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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.