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Finding the Fourth Proportional to 27,308.88, 40,966.56 and 12,521.52

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Solution

The fourth proportional to 27,308.88, 40,966.56 and 12,521.52 is: 18,783.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,308.88 : 40,966.56 = 12,521.52 : x
  2. Step 2: Convert to fraction form
    27,308.88/40,966.56 = 12,521.52/x
  3. Step 3: Cross multiply
    27,308.88x = 40,966.56 × 12,521.52
  4. Step 4: Simplify right side
    27,308.88x = 512,963,600.37
  5. Step 5: Solve for x
    x = 512,963,600.37/27,308.88
  6. Step 6: Final answer
    x = 18,783.77

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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.