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Finding the Fourth Proportional to 13,424.10, 18,525.74 and 7,455.88

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Solution

The fourth proportional to 13,424.10, 18,525.74 and 7,455.88 is: 10,289.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.10 : 18,525.74 = 7,455.88 : x
  2. Step 2: Convert to fraction form
    13,424.10/18,525.74 = 7,455.88/x
  3. Step 3: Cross multiply
    13,424.10x = 18,525.74 × 7,455.88
  4. Step 4: Simplify right side
    13,424.10x = 138,125,694.35
  5. Step 5: Solve for x
    x = 138,125,694.35/13,424.10
  6. Step 6: Final answer
    x = 10,289.38

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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.