Home / 14,678.12-20,255.58-7,963.76

Finding the Fourth Proportional to 14,678.12, 20,255.58 and 7,963.76

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Solution

The fourth proportional to 14,678.12, 20,255.58 and 7,963.76 is: 10,989.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,678.12 : 20,255.58 = 7,963.76 : x
  2. Step 2: Convert to fraction form
    14,678.12/20,255.58 = 7,963.76/x
  3. Step 3: Cross multiply
    14,678.12x = 20,255.58 × 7,963.76
  4. Step 4: Simplify right side
    14,678.12x = 161,310,476.50
  5. Step 5: Solve for x
    x = 161,310,476.50/14,678.12
  6. Step 6: Final answer
    x = 10,989.86

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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.