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Finding the Fourth Proportional to 14,404.84, 19,878.48 and 8,117.32

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Solution

The fourth proportional to 14,404.84, 19,878.48 and 8,117.32 is: 11,201.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,404.84 : 19,878.48 = 8,117.32 : x
  2. Step 2: Convert to fraction form
    14,404.84/19,878.48 = 8,117.32/x
  3. Step 3: Cross multiply
    14,404.84x = 19,878.48 × 8,117.32
  4. Step 4: Simplify right side
    14,404.84x = 161,359,983.27
  5. Step 5: Solve for x
    x = 161,359,983.27/14,404.84
  6. Step 6: Final answer
    x = 11,201.79

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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.