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Finding the Fourth Proportional to 13,673.57, 18,869.54 and 7,385.95

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Solution

The fourth proportional to 13,673.57, 18,869.54 and 7,385.95 is: 10,192.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.57 : 18,869.54 = 7,385.95 : x
  2. Step 2: Convert to fraction form
    13,673.57/18,869.54 = 7,385.95/x
  3. Step 3: Cross multiply
    13,673.57x = 18,869.54 × 7,385.95
  4. Step 4: Simplify right side
    13,673.57x = 139,369,347.69
  5. Step 5: Solve for x
    x = 139,369,347.69/13,673.57
  6. Step 6: Final answer
    x = 10,192.61

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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.