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Finding the Fourth Proportional to 19,644.32, 27,108.88 and 10,812.32

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Solution

The fourth proportional to 19,644.32, 27,108.88 and 10,812.32 is: 14,920.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,644.32 : 27,108.88 = 10,812.32 : x
  2. Step 2: Convert to fraction form
    19,644.32/27,108.88 = 10,812.32/x
  3. Step 3: Cross multiply
    19,644.32x = 27,108.88 × 10,812.32
  4. Step 4: Simplify right side
    19,644.32x = 293,109,885.40
  5. Step 5: Solve for x
    x = 293,109,885.40/19,644.32
  6. Step 6: Final answer
    x = 14,920.85

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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.