Home / 15,638.12-21,580.57-8,468.00

Finding the Fourth Proportional to 15,638.12, 21,580.57 and 8,468.00

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Solution

The fourth proportional to 15,638.12, 21,580.57 and 8,468.00 is: 11,685.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.12 : 21,580.57 = 8,468.00 : x
  2. Step 2: Convert to fraction form
    15,638.12/21,580.57 = 8,468.00/x
  3. Step 3: Cross multiply
    15,638.12x = 21,580.57 × 8,468.00
  4. Step 4: Simplify right side
    15,638.12x = 182,744,250.37
  5. Step 5: Solve for x
    x = 182,744,250.37/15,638.12
  6. Step 6: Final answer
    x = 11,685.82

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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.