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Finding the Fourth Proportional to 14,394.72, 19,867.68 and 8,429.52

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Solution

The fourth proportional to 14,394.72, 19,867.68 and 8,429.52 is: 11,634.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,394.72 : 19,867.68 = 8,429.52 : x
  2. Step 2: Convert to fraction form
    14,394.72/19,867.68 = 8,429.52/x
  3. Step 3: Cross multiply
    14,394.72x = 19,867.68 × 8,429.52
  4. Step 4: Simplify right side
    14,394.72x = 167,475,005.91
  5. Step 5: Solve for x
    x = 167,475,005.91/14,394.72
  6. Step 6: Final answer
    x = 11,634.47

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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.