Home / 21,669.08-29,900.30-12,107.76

Finding the Fourth Proportional to 21,669.08, 29,900.30 and 12,107.76

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Solution

The fourth proportional to 21,669.08, 29,900.30 and 12,107.76 is: 16,707.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,669.08 : 29,900.30 = 12,107.76 : x
  2. Step 2: Convert to fraction form
    21,669.08/29,900.30 = 12,107.76/x
  3. Step 3: Cross multiply
    21,669.08x = 29,900.30 × 12,107.76
  4. Step 4: Simplify right side
    21,669.08x = 362,025,656.33
  5. Step 5: Solve for x
    x = 362,025,656.33/21,669.08
  6. Step 6: Final answer
    x = 16,707.02

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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.