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Finding the Fourth Proportional to 19,610.60, 29,415.90 and 11,287.40

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Solution

The fourth proportional to 19,610.60, 29,415.90 and 11,287.40 is: 16,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,610.60 : 29,415.90 = 11,287.40 : x
  2. Step 2: Convert to fraction form
    19,610.60/29,415.90 = 11,287.40/x
  3. Step 3: Cross multiply
    19,610.60x = 29,415.90 × 11,287.40
  4. Step 4: Simplify right side
    19,610.60x = 332,029,029.66
  5. Step 5: Solve for x
    x = 332,029,029.66/19,610.60
  6. Step 6: Final answer
    x = 16,931.10

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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.