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Finding the Fourth Proportional to 14,245.88, 19,643.31 and 9,203.45

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Solution

The fourth proportional to 14,245.88, 19,643.31 and 9,203.45 is: 12,690.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,245.88 : 19,643.31 = 9,203.45 : x
  2. Step 2: Convert to fraction form
    14,245.88/19,643.31 = 9,203.45/x
  3. Step 3: Cross multiply
    14,245.88x = 19,643.31 × 9,203.45
  4. Step 4: Simplify right side
    14,245.88x = 180,786,123.20
  5. Step 5: Solve for x
    x = 180,786,123.20/14,245.88
  6. Step 6: Final answer
    x = 12,690.42

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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.