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Finding the Fourth Proportional to 22,698.40, 34,047.60 and 13,789.60

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Solution

The fourth proportional to 22,698.40, 34,047.60 and 13,789.60 is: 20,684.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,698.40 : 34,047.60 = 13,789.60 : x
  2. Step 2: Convert to fraction form
    22,698.40/34,047.60 = 13,789.60/x
  3. Step 3: Cross multiply
    22,698.40x = 34,047.60 × 13,789.60
  4. Step 4: Simplify right side
    22,698.40x = 469,502,784.96
  5. Step 5: Solve for x
    x = 469,502,784.96/22,698.40
  6. Step 6: Final answer
    x = 20,684.40

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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.