Home / 18,780.88-28,175.76-6,130.57

Finding the Fourth Proportional to 18,780.88, 28,175.76 and 6,130.57

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Solution

The fourth proportional to 18,780.88, 28,175.76 and 6,130.57 is: 9,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.88 : 28,175.76 = 6,130.57 : x
  2. Step 2: Convert to fraction form
    18,780.88/28,175.76 = 6,130.57/x
  3. Step 3: Cross multiply
    18,780.88x = 28,175.76 × 6,130.57
  4. Step 4: Simplify right side
    18,780.88x = 172,733,328.10
  5. Step 5: Solve for x
    x = 172,733,328.10/18,780.88
  6. Step 6: Final answer
    x = 9,197.30

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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.