Home / 18,212.61-27,307.60-7,677.21

Finding the Fourth Proportional to 18,212.61, 27,307.60 and 7,677.21

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Solution

The fourth proportional to 18,212.61, 27,307.60 and 7,677.21 is: 11,511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212.61 : 27,307.60 = 7,677.21 : x
  2. Step 2: Convert to fraction form
    18,212.61/27,307.60 = 7,677.21/x
  3. Step 3: Cross multiply
    18,212.61x = 27,307.60 × 7,677.21
  4. Step 4: Simplify right side
    18,212.61x = 209,646,179.80
  5. Step 5: Solve for x
    x = 209,646,179.80/18,212.61
  6. Step 6: Final answer
    x = 11,511.05

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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.