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Finding the Fourth Proportional to 13,344.56, 20,017.88 and 7,798.48

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Solution

The fourth proportional to 13,344.56, 20,017.88 and 7,798.48 is: 11,698.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,344.56 : 20,017.88 = 7,798.48 : x
  2. Step 2: Convert to fraction form
    13,344.56/20,017.88 = 7,798.48/x
  3. Step 3: Cross multiply
    13,344.56x = 20,017.88 × 7,798.48
  4. Step 4: Simplify right side
    13,344.56x = 156,109,036.82
  5. Step 5: Solve for x
    x = 156,109,036.82/13,344.56
  6. Step 6: Final answer
    x = 11,698.33

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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.