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Finding the Fourth Proportional to 13,064.40, 19,598.40 and 5,165.40

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Solution

The fourth proportional to 13,064.40, 19,598.40 and 5,165.40 is: 7,748.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,064.40 : 19,598.40 = 5,165.40 : x
  2. Step 2: Convert to fraction form
    13,064.40/19,598.40 = 5,165.40/x
  3. Step 3: Cross multiply
    13,064.40x = 19,598.40 × 5,165.40
  4. Step 4: Simplify right side
    13,064.40x = 101,233,575.36
  5. Step 5: Solve for x
    x = 101,233,575.36/13,064.40
  6. Step 6: Final answer
    x = 7,748.81

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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.