Home / 13,763.49-18,987.48-8,171.25

Finding the Fourth Proportional to 13,763.49, 18,987.48 and 8,171.25

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Solution

The fourth proportional to 13,763.49, 18,987.48 and 8,171.25 is: 11,272.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.49 : 18,987.48 = 8,171.25 : x
  2. Step 2: Convert to fraction form
    13,763.49/18,987.48 = 8,171.25/x
  3. Step 3: Cross multiply
    13,763.49x = 18,987.48 × 8,171.25
  4. Step 4: Simplify right side
    13,763.49x = 155,151,445.95
  5. Step 5: Solve for x
    x = 155,151,445.95/13,763.49
  6. Step 6: Final answer
    x = 11,272.68

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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.