Home / 21,507.15-29,678.22-12,073.89

Finding the Fourth Proportional to 21,507.15, 29,678.22 and 12,073.89

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Solution

The fourth proportional to 21,507.15, 29,678.22 and 12,073.89 is: 16,661.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507.15 : 29,678.22 = 12,073.89 : x
  2. Step 2: Convert to fraction form
    21,507.15/29,678.22 = 12,073.89/x
  3. Step 3: Cross multiply
    21,507.15x = 29,678.22 × 12,073.89
  4. Step 4: Simplify right side
    21,507.15x = 358,331,563.68
  5. Step 5: Solve for x
    x = 358,331,563.68/21,507.15
  6. Step 6: Final answer
    x = 16,661.04

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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.