Home / 13,903.85-19,180.67-9,121.84

Finding the Fourth Proportional to 13,903.85, 19,180.67 and 9,121.84

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Solution

The fourth proportional to 13,903.85, 19,180.67 and 9,121.84 is: 12,583.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.85 : 19,180.67 = 9,121.84 : x
  2. Step 2: Convert to fraction form
    13,903.85/19,180.67 = 9,121.84/x
  3. Step 3: Cross multiply
    13,903.85x = 19,180.67 × 9,121.84
  4. Step 4: Simplify right side
    13,903.85x = 174,963,040.18
  5. Step 5: Solve for x
    x = 174,963,040.18/13,903.85
  6. Step 6: Final answer
    x = 12,583.78

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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.