Home / 12,386.97-18,583.90-4,989.70

Finding the Fourth Proportional to 12,386.97, 18,583.90 and 4,989.70

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Solution

The fourth proportional to 12,386.97, 18,583.90 and 4,989.70 is: 7,485.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386.97 : 18,583.90 = 4,989.70 : x
  2. Step 2: Convert to fraction form
    12,386.97/18,583.90 = 4,989.70/x
  3. Step 3: Cross multiply
    12,386.97x = 18,583.90 × 4,989.70
  4. Step 4: Simplify right side
    12,386.97x = 92,728,085.83
  5. Step 5: Solve for x
    x = 92,728,085.83/12,386.97
  6. Step 6: Final answer
    x = 7,485.94

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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.