Home / 21,380.10-32,026.38-12,588.36

Finding the Fourth Proportional to 21,380.10, 32,026.38 and 12,588.36

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Solution

The fourth proportional to 21,380.10, 32,026.38 and 12,588.36 is: 18,856.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.10 : 32,026.38 = 12,588.36 : x
  2. Step 2: Convert to fraction form
    21,380.10/32,026.38 = 12,588.36/x
  3. Step 3: Cross multiply
    21,380.10x = 32,026.38 × 12,588.36
  4. Step 4: Simplify right side
    21,380.10x = 403,159,600.94
  5. Step 5: Solve for x
    x = 403,159,600.94/21,380.10
  6. Step 6: Final answer
    x = 18,856.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.