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Finding the Fourth Proportional to 19,479.17, 26,881.17 and 10,982.21

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Solution

The fourth proportional to 19,479.17, 26,881.17 and 10,982.21 is: 15,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479.17 : 26,881.17 = 10,982.21 : x
  2. Step 2: Convert to fraction form
    19,479.17/26,881.17 = 10,982.21/x
  3. Step 3: Cross multiply
    19,479.17x = 26,881.17 × 10,982.21
  4. Step 4: Simplify right side
    19,479.17x = 295,214,519.58
  5. Step 5: Solve for x
    x = 295,214,519.58/19,479.17
  6. Step 6: Final answer
    x = 15,155.40

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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.