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Finding the Fourth Proportional to 15,804.80, 21,753.60 and 14,897.60

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Solution

The fourth proportional to 15,804.80, 21,753.60 and 14,897.60 is: 20,504.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,804.80 : 21,753.60 = 14,897.60 : x
  2. Step 2: Convert to fraction form
    15,804.80/21,753.60 = 14,897.60/x
  3. Step 3: Cross multiply
    15,804.80x = 21,753.60 × 14,897.60
  4. Step 4: Simplify right side
    15,804.80x = 324,076,431.36
  5. Step 5: Solve for x
    x = 324,076,431.36/15,804.80
  6. Step 6: Final answer
    x = 20,504.94

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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.