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Finding the Fourth Proportional to 18,457.85, 25,472.39 and 10,500.81

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Solution

The fourth proportional to 18,457.85, 25,472.39 and 10,500.81 is: 14,491.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457.85 : 25,472.39 = 10,500.81 : x
  2. Step 2: Convert to fraction form
    18,457.85/25,472.39 = 10,500.81/x
  3. Step 3: Cross multiply
    18,457.85x = 25,472.39 × 10,500.81
  4. Step 4: Simplify right side
    18,457.85x = 267,480,675.13
  5. Step 5: Solve for x
    x = 267,480,675.13/18,457.85
  6. Step 6: Final answer
    x = 14,491.44

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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.