Home / 14,936.40-20,617.20-10,918.80

Finding the Fourth Proportional to 14,936.40, 20,617.20 and 10,918.80

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Solution

The fourth proportional to 14,936.40, 20,617.20 and 10,918.80 is: 15,071.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,936.40 : 20,617.20 = 10,918.80 : x
  2. Step 2: Convert to fraction form
    14,936.40/20,617.20 = 10,918.80/x
  3. Step 3: Cross multiply
    14,936.40x = 20,617.20 × 10,918.80
  4. Step 4: Simplify right side
    14,936.40x = 225,115,083.36
  5. Step 5: Solve for x
    x = 225,115,083.36/14,936.40
  6. Step 6: Final answer
    x = 15,071.58

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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.