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Finding the Fourth Proportional to 18,457.40, 25,469.70 and 10,497.80

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Solution

The fourth proportional to 18,457.40, 25,469.70 and 10,497.80 is: 14,486.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457.40 : 25,469.70 = 10,497.80 : x
  2. Step 2: Convert to fraction form
    18,457.40/25,469.70 = 10,497.80/x
  3. Step 3: Cross multiply
    18,457.40x = 25,469.70 × 10,497.80
  4. Step 4: Simplify right side
    18,457.40x = 267,375,816.66
  5. Step 5: Solve for x
    x = 267,375,816.66/18,457.40
  6. Step 6: Final answer
    x = 14,486.10

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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.