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Finding the Fourth Proportional to 19,804.80, 29,697.60 and 11,030.40

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Solution

The fourth proportional to 19,804.80, 29,697.60 and 11,030.40 is: 16,540.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,804.80 : 29,697.60 = 11,030.40 : x
  2. Step 2: Convert to fraction form
    19,804.80/29,697.60 = 11,030.40/x
  3. Step 3: Cross multiply
    19,804.80x = 29,697.60 × 11,030.40
  4. Step 4: Simplify right side
    19,804.80x = 327,576,407.04
  5. Step 5: Solve for x
    x = 327,576,407.04/19,804.80
  6. Step 6: Final answer
    x = 16,540.25

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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.