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Finding the Fourth Proportional to 14,671.89, 20,247.09 and 7,957.50

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Solution

The fourth proportional to 14,671.89, 20,247.09 and 7,957.50 is: 10,981.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,671.89 : 20,247.09 = 7,957.50 : x
  2. Step 2: Convert to fraction form
    14,671.89/20,247.09 = 7,957.50/x
  3. Step 3: Cross multiply
    14,671.89x = 20,247.09 × 7,957.50
  4. Step 4: Simplify right side
    14,671.89x = 161,116,218.68
  5. Step 5: Solve for x
    x = 161,116,218.68/14,671.89
  6. Step 6: Final answer
    x = 10,981.29

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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.