Home / 21,669.28-29,903.60-12,237.68

Finding the Fourth Proportional to 21,669.28, 29,903.60 and 12,237.68

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Solution

The fourth proportional to 21,669.28, 29,903.60 and 12,237.68 is: 16,887.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,669.28 : 29,903.60 = 12,237.68 : x
  2. Step 2: Convert to fraction form
    21,669.28/29,903.60 = 12,237.68/x
  3. Step 3: Cross multiply
    21,669.28x = 29,903.60 × 12,237.68
  4. Step 4: Simplify right side
    21,669.28x = 365,950,687.65
  5. Step 5: Solve for x
    x = 365,950,687.65/21,669.28
  6. Step 6: Final answer
    x = 16,887.99

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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.