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Finding the Fourth Proportional to 13,420.02, 20,113.02 and 7,579.92

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Solution

The fourth proportional to 13,420.02, 20,113.02 and 7,579.92 is: 11,360.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.02 : 20,113.02 = 7,579.92 : x
  2. Step 2: Convert to fraction form
    13,420.02/20,113.02 = 7,579.92/x
  3. Step 3: Cross multiply
    13,420.02x = 20,113.02 × 7,579.92
  4. Step 4: Simplify right side
    13,420.02x = 152,455,082.56
  5. Step 5: Solve for x
    x = 152,455,082.56/13,420.02
  6. Step 6: Final answer
    x = 11,360.27

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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.