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Finding the Fourth Proportional to 17,388.68, 24,008.78 and 13,749.30

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Solution

The fourth proportional to 17,388.68, 24,008.78 and 13,749.30 is: 18,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,388.68 : 24,008.78 = 13,749.30 : x
  2. Step 2: Convert to fraction form
    17,388.68/24,008.78 = 13,749.30/x
  3. Step 3: Cross multiply
    17,388.68x = 24,008.78 × 13,749.30
  4. Step 4: Simplify right side
    17,388.68x = 330,103,953.23
  5. Step 5: Solve for x
    x = 330,103,953.23/17,388.68
  6. Step 6: Final answer
    x = 18,983.85

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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.