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Finding the Fourth Proportional to 12,473.60, 18,714.12 and 3,708.80

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Solution

The fourth proportional to 12,473.60, 18,714.12 and 3,708.80 is: 5,564.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,473.60 : 18,714.12 = 3,708.80 : x
  2. Step 2: Convert to fraction form
    12,473.60/18,714.12 = 3,708.80/x
  3. Step 3: Cross multiply
    12,473.60x = 18,714.12 × 3,708.80
  4. Step 4: Simplify right side
    12,473.60x = 69,406,928.26
  5. Step 5: Solve for x
    x = 69,406,928.26/12,473.60
  6. Step 6: Final answer
    x = 5,564.31

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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.