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Finding the Fourth Proportional to 12,705.08, 17,532.36 and 7,039.68

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Solution

The fourth proportional to 12,705.08, 17,532.36 and 7,039.68 is: 9,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,705.08 : 17,532.36 = 7,039.68 : x
  2. Step 2: Convert to fraction form
    12,705.08/17,532.36 = 7,039.68/x
  3. Step 3: Cross multiply
    12,705.08x = 17,532.36 × 7,039.68
  4. Step 4: Simplify right side
    12,705.08x = 123,422,204.04
  5. Step 5: Solve for x
    x = 123,422,204.04/12,705.08
  6. Step 6: Final answer
    x = 9,714.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.