Home / 19,176.36-28,758.84-8,640.30

Finding the Fourth Proportional to 19,176.36, 28,758.84 and 8,640.30

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Solution

The fourth proportional to 19,176.36, 28,758.84 and 8,640.30 is: 12,957.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,176.36 : 28,758.84 = 8,640.30 : x
  2. Step 2: Convert to fraction form
    19,176.36/28,758.84 = 8,640.30/x
  3. Step 3: Cross multiply
    19,176.36x = 28,758.84 × 8,640.30
  4. Step 4: Simplify right side
    19,176.36x = 248,485,005.25
  5. Step 5: Solve for x
    x = 248,485,005.25/19,176.36
  6. Step 6: Final answer
    x = 12,957.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.