Home / 11,008.20-16,512.30-7,315.40

Finding the Fourth Proportional to 11,008.20, 16,512.30 and 7,315.40

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Solution

The fourth proportional to 11,008.20, 16,512.30 and 7,315.40 is: 10,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,008.20 : 16,512.30 = 7,315.40 : x
  2. Step 2: Convert to fraction form
    11,008.20/16,512.30 = 7,315.40/x
  3. Step 3: Cross multiply
    11,008.20x = 16,512.30 × 7,315.40
  4. Step 4: Simplify right side
    11,008.20x = 120,794,079.42
  5. Step 5: Solve for x
    x = 120,794,079.42/11,008.20
  6. Step 6: Final answer
    x = 10,973.10

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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.