Home / 13,918.25-20,855.47-10,763.40

Finding the Fourth Proportional to 13,918.25, 20,855.47 and 10,763.40

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Solution

The fourth proportional to 13,918.25, 20,855.47 and 10,763.40 is: 16,128.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.25 : 20,855.47 = 10,763.40 : x
  2. Step 2: Convert to fraction form
    13,918.25/20,855.47 = 10,763.40/x
  3. Step 3: Cross multiply
    13,918.25x = 20,855.47 × 10,763.40
  4. Step 4: Simplify right side
    13,918.25x = 224,475,765.80
  5. Step 5: Solve for x
    x = 224,475,765.80/13,918.25
  6. Step 6: Final answer
    x = 16,128.16

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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.