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Finding the Fourth Proportional to 13,698.96, 20,549.72 and 6,305.48

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Solution

The fourth proportional to 13,698.96, 20,549.72 and 6,305.48 is: 9,458.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.96 : 20,549.72 = 6,305.48 : x
  2. Step 2: Convert to fraction form
    13,698.96/20,549.72 = 6,305.48/x
  3. Step 3: Cross multiply
    13,698.96x = 20,549.72 × 6,305.48
  4. Step 4: Simplify right side
    13,698.96x = 129,575,848.47
  5. Step 5: Solve for x
    x = 129,575,848.47/13,698.96
  6. Step 6: Final answer
    x = 9,458.81

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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.