Home / 11,175.05-15,421.77-6,139.14

Finding the Fourth Proportional to 11,175.05, 15,421.77 and 6,139.14

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Solution

The fourth proportional to 11,175.05, 15,421.77 and 6,139.14 is: 8,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,175.05 : 15,421.77 = 6,139.14 : x
  2. Step 2: Convert to fraction form
    11,175.05/15,421.77 = 6,139.14/x
  3. Step 3: Cross multiply
    11,175.05x = 15,421.77 × 6,139.14
  4. Step 4: Simplify right side
    11,175.05x = 94,676,405.08
  5. Step 5: Solve for x
    x = 94,676,405.08/11,175.05
  6. Step 6: Final answer
    x = 8,472.13

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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.