Home / 28,961.66-39,966-16,386.68

Finding the Fourth Proportional to 28,961.66, 39,966 and 16,386.68

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Solution

The fourth proportional to 28,961.66, 39,966 and 16,386.68 is: 22,613.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,961.66 : 39,966 = 16,386.68 : x
  2. Step 2: Convert to fraction form
    28,961.66/39,966 = 16,386.68/x
  3. Step 3: Cross multiply
    28,961.66x = 39,966 × 16,386.68
  4. Step 4: Simplify right side
    28,961.66x = 654,910,052.88
  5. Step 5: Solve for x
    x = 654,910,052.88/28,961.66
  6. Step 6: Final answer
    x = 22,613.00

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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.