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Finding the Fourth Proportional to 19,807.74, 27,335.21 and 10,855.89

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Solution

The fourth proportional to 19,807.74, 27,335.21 and 10,855.89 is: 14,981.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,807.74 : 27,335.21 = 10,855.89 : x
  2. Step 2: Convert to fraction form
    19,807.74/27,335.21 = 10,855.89/x
  3. Step 3: Cross multiply
    19,807.74x = 27,335.21 × 10,855.89
  4. Step 4: Simplify right side
    19,807.74x = 296,747,978.61
  5. Step 5: Solve for x
    x = 296,747,978.61/19,807.74
  6. Step 6: Final answer
    x = 14,981.42

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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.