Home / 12,386.43-18,580.59-4,990.95

Finding the Fourth Proportional to 12,386.43, 18,580.59 and 4,990.95

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Solution

The fourth proportional to 12,386.43, 18,580.59 and 4,990.95 is: 7,486.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386.43 : 18,580.59 = 4,990.95 : x
  2. Step 2: Convert to fraction form
    12,386.43/18,580.59 = 4,990.95/x
  3. Step 3: Cross multiply
    12,386.43x = 18,580.59 × 4,990.95
  4. Step 4: Simplify right side
    12,386.43x = 92,734,795.66
  5. Step 5: Solve for x
    x = 92,734,795.66/12,386.43
  6. Step 6: Final answer
    x = 7,486.81

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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.