Home / 12,611.49-18,910.66-4,707.50

Finding the Fourth Proportional to 12,611.49, 18,910.66 and 4,707.50

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Solution

The fourth proportional to 12,611.49, 18,910.66 and 4,707.50 is: 7,058.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.49 : 18,910.66 = 4,707.50 : x
  2. Step 2: Convert to fraction form
    12,611.49/18,910.66 = 4,707.50/x
  3. Step 3: Cross multiply
    12,611.49x = 18,910.66 × 4,707.50
  4. Step 4: Simplify right side
    12,611.49x = 89,021,985.11
  5. Step 5: Solve for x
    x = 89,021,985.11/12,611.49
  6. Step 6: Final answer
    x = 7,058.80

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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.