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Finding the Fourth Proportional to 15,656.67, 21,606.21 and 8,583.75

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Solution

The fourth proportional to 15,656.67, 21,606.21 and 8,583.75 is: 11,845.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,656.67 : 21,606.21 = 8,583.75 : x
  2. Step 2: Convert to fraction form
    15,656.67/21,606.21 = 8,583.75/x
  3. Step 3: Cross multiply
    15,656.67x = 21,606.21 × 8,583.75
  4. Step 4: Simplify right side
    15,656.67x = 185,462,305.09
  5. Step 5: Solve for x
    x = 185,462,305.09/15,656.67
  6. Step 6: Final answer
    x = 11,845.58

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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.