Home / 15,035.10-20,748.12-8,320.32

Finding the Fourth Proportional to 15,035.10, 20,748.12 and 8,320.32

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Solution

The fourth proportional to 15,035.10, 20,748.12 and 8,320.32 is: 11,481.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,035.10 : 20,748.12 = 8,320.32 : x
  2. Step 2: Convert to fraction form
    15,035.10/20,748.12 = 8,320.32/x
  3. Step 3: Cross multiply
    15,035.10x = 20,748.12 × 8,320.32
  4. Step 4: Simplify right side
    15,035.10x = 172,630,997.80
  5. Step 5: Solve for x
    x = 172,630,997.80/15,035.10
  6. Step 6: Final answer
    x = 11,481.87

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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.