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Finding the Fourth Proportional to 14,403.90, 21,600.90 and 7,003.60

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Solution

The fourth proportional to 14,403.90, 21,600.90 and 7,003.60 is: 10,502.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,403.90 : 21,600.90 = 7,003.60 : x
  2. Step 2: Convert to fraction form
    14,403.90/21,600.90 = 7,003.60/x
  3. Step 3: Cross multiply
    14,403.90x = 21,600.90 × 7,003.60
  4. Step 4: Simplify right side
    14,403.90x = 151,284,063.24
  5. Step 5: Solve for x
    x = 151,284,063.24/14,403.90
  6. Step 6: Final answer
    x = 10,502.99

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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.