Home / 13,008.20-19,500.90-7,730.20

Finding the Fourth Proportional to 13,008.20, 19,500.90 and 7,730.20

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Solution

The fourth proportional to 13,008.20, 19,500.90 and 7,730.20 is: 11,588.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008.20 : 19,500.90 = 7,730.20 : x
  2. Step 2: Convert to fraction form
    13,008.20/19,500.90 = 7,730.20/x
  3. Step 3: Cross multiply
    13,008.20x = 19,500.90 × 7,730.20
  4. Step 4: Simplify right side
    13,008.20x = 150,745,857.18
  5. Step 5: Solve for x
    x = 150,745,857.18/13,008.20
  6. Step 6: Final answer
    x = 11,588.53

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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.