Home / 28,808.72-39,758.64-16,876.16

Finding the Fourth Proportional to 28,808.72, 39,758.64 and 16,876.16

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Solution

The fourth proportional to 28,808.72, 39,758.64 and 16,876.16 is: 23,290.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,808.72 : 39,758.64 = 16,876.16 : x
  2. Step 2: Convert to fraction form
    28,808.72/39,758.64 = 16,876.16/x
  3. Step 3: Cross multiply
    28,808.72x = 39,758.64 × 16,876.16
  4. Step 4: Simplify right side
    28,808.72x = 670,973,170.02
  5. Step 5: Solve for x
    x = 670,973,170.02/28,808.72
  6. Step 6: Final answer
    x = 23,290.63

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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.