Home / 13,987.62-20,961.65-7,750.49

Finding the Fourth Proportional to 13,987.62, 20,961.65 and 7,750.49

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Solution

The fourth proportional to 13,987.62, 20,961.65 and 7,750.49 is: 11,614.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.62 : 20,961.65 = 7,750.49 : x
  2. Step 2: Convert to fraction form
    13,987.62/20,961.65 = 7,750.49/x
  3. Step 3: Cross multiply
    13,987.62x = 20,961.65 × 7,750.49
  4. Step 4: Simplify right side
    13,987.62x = 162,462,973.28
  5. Step 5: Solve for x
    x = 162,462,973.28/13,987.62
  6. Step 6: Final answer
    x = 11,614.77

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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.