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Finding the Fourth Proportional to 14,782.58, 20,399.90 and 8,068.20

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Solution

The fourth proportional to 14,782.58, 20,399.90 and 8,068.20 is: 11,134.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,782.58 : 20,399.90 = 8,068.20 : x
  2. Step 2: Convert to fraction form
    14,782.58/20,399.90 = 8,068.20/x
  3. Step 3: Cross multiply
    14,782.58x = 20,399.90 × 8,068.20
  4. Step 4: Simplify right side
    14,782.58x = 164,590,525.90
  5. Step 5: Solve for x
    x = 164,590,525.90/14,782.58
  6. Step 6: Final answer
    x = 11,134.09

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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.