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Finding the Fourth Proportional to 12,585.50, 17,368.02 and 6,997.58

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Solution

The fourth proportional to 12,585.50, 17,368.02 and 6,997.58 is: 9,656.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.50 : 17,368.02 = 6,997.58 : x
  2. Step 2: Convert to fraction form
    12,585.50/17,368.02 = 6,997.58/x
  3. Step 3: Cross multiply
    12,585.50x = 17,368.02 × 6,997.58
  4. Step 4: Simplify right side
    12,585.50x = 121,534,109.39
  5. Step 5: Solve for x
    x = 121,534,109.39/12,585.50
  6. Step 6: Final answer
    x = 9,656.68

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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.