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Finding the Fourth Proportional to 10,987.10, 16,480.65 and 10,914.20

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Solution

The fourth proportional to 10,987.10, 16,480.65 and 10,914.20 is: 16,371.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.10 : 16,480.65 = 10,914.20 : x
  2. Step 2: Convert to fraction form
    10,987.10/16,480.65 = 10,914.20/x
  3. Step 3: Cross multiply
    10,987.10x = 16,480.65 × 10,914.20
  4. Step 4: Simplify right side
    10,987.10x = 179,873,110.23
  5. Step 5: Solve for x
    x = 179,873,110.23/10,987.10
  6. Step 6: Final answer
    x = 16,371.30

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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.