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Finding the Fourth Proportional to 15,676.34, 21,633.52 and 8,603.04

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Solution

The fourth proportional to 15,676.34, 21,633.52 and 8,603.04 is: 11,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,676.34 : 21,633.52 = 8,603.04 : x
  2. Step 2: Convert to fraction form
    15,676.34/21,633.52 = 8,603.04/x
  3. Step 3: Cross multiply
    15,676.34x = 21,633.52 × 8,603.04
  4. Step 4: Simplify right side
    15,676.34x = 186,114,037.90
  5. Step 5: Solve for x
    x = 186,114,037.90/15,676.34
  6. Step 6: Final answer
    x = 11,872.29

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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.