Home / 14,787.26-20,405.54-8,499.63

Finding the Fourth Proportional to 14,787.26, 20,405.54 and 8,499.63

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Solution

The fourth proportional to 14,787.26, 20,405.54 and 8,499.63 is: 11,728.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,787.26 : 20,405.54 = 8,499.63 : x
  2. Step 2: Convert to fraction form
    14,787.26/20,405.54 = 8,499.63/x
  3. Step 3: Cross multiply
    14,787.26x = 20,405.54 × 8,499.63
  4. Step 4: Simplify right side
    14,787.26x = 173,439,561.20
  5. Step 5: Solve for x
    x = 173,439,561.20/14,787.26
  6. Step 6: Final answer
    x = 11,728.99

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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.