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Finding the Fourth Proportional to 20,601.71, 28,430.96 and 11,649.02

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Solution

The fourth proportional to 20,601.71, 28,430.96 and 11,649.02 is: 16,075.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.71 : 28,430.96 = 11,649.02 : x
  2. Step 2: Convert to fraction form
    20,601.71/28,430.96 = 11,649.02/x
  3. Step 3: Cross multiply
    20,601.71x = 28,430.96 × 11,649.02
  4. Step 4: Simplify right side
    20,601.71x = 331,192,621.26
  5. Step 5: Solve for x
    x = 331,192,621.26/20,601.71
  6. Step 6: Final answer
    x = 16,075.98

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.