Home / 10,987.10-16,517.10-9,383.30

Finding the Fourth Proportional to 10,987.10, 16,517.10 and 9,383.30

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Solution

The fourth proportional to 10,987.10, 16,517.10 and 9,383.30 is: 14,106.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.10 : 16,517.10 = 9,383.30 : x
  2. Step 2: Convert to fraction form
    10,987.10/16,517.10 = 9,383.30/x
  3. Step 3: Cross multiply
    10,987.10x = 16,517.10 × 9,383.30
  4. Step 4: Simplify right side
    10,987.10x = 154,984,904.43
  5. Step 5: Solve for x
    x = 154,984,904.43/10,987.10
  6. Step 6: Final answer
    x = 14,106.08

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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.