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Finding the Fourth Proportional to 15,596.64, 21,523.24 and 8,790.04

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Solution

The fourth proportional to 15,596.64, 21,523.24 and 8,790.04 is: 12,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,596.64 : 21,523.24 = 8,790.04 : x
  2. Step 2: Convert to fraction form
    15,596.64/21,523.24 = 8,790.04/x
  3. Step 3: Cross multiply
    15,596.64x = 21,523.24 × 8,790.04
  4. Step 4: Simplify right side
    15,596.64x = 189,190,140.53
  5. Step 5: Solve for x
    x = 189,190,140.53/15,596.64
  6. Step 6: Final answer
    x = 12,130.19

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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.