Home / 19,175.61-28,758.14-12,145.08

Finding the Fourth Proportional to 19,175.61, 28,758.14 and 12,145.08

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Solution

The fourth proportional to 19,175.61, 28,758.14 and 12,145.08 is: 18,214.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,175.61 : 28,758.14 = 12,145.08 : x
  2. Step 2: Convert to fraction form
    19,175.61/28,758.14 = 12,145.08/x
  3. Step 3: Cross multiply
    19,175.61x = 28,758.14 × 12,145.08
  4. Step 4: Simplify right side
    19,175.61x = 349,269,910.95
  5. Step 5: Solve for x
    x = 349,269,910.95/19,175.61
  6. Step 6: Final answer
    x = 18,214.28

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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.