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Finding the Fourth Proportional to 12,585.56, 17,368.08 and 6,996.56

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Solution

The fourth proportional to 12,585.56, 17,368.08 and 6,996.56 is: 9,655.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,585.56 : 17,368.08 = 6,996.56 : x
  2. Step 2: Convert to fraction form
    12,585.56/17,368.08 = 6,996.56/x
  3. Step 3: Cross multiply
    12,585.56x = 17,368.08 × 6,996.56
  4. Step 4: Simplify right side
    12,585.56x = 121,516,813.80
  5. Step 5: Solve for x
    x = 121,516,813.80/12,585.56
  6. Step 6: Final answer
    x = 9,655.26

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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.