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Finding the Fourth Proportional to 19,771.84, 29,691.68 and 17,555.68

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Solution

The fourth proportional to 19,771.84, 29,691.68 and 17,555.68 is: 26,363.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,771.84 : 29,691.68 = 17,555.68 : x
  2. Step 2: Convert to fraction form
    19,771.84/29,691.68 = 17,555.68/x
  3. Step 3: Cross multiply
    19,771.84x = 29,691.68 × 17,555.68
  4. Step 4: Simplify right side
    19,771.84x = 521,257,632.74
  5. Step 5: Solve for x
    x = 521,257,632.74/19,771.84
  6. Step 6: Final answer
    x = 26,363.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.