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Finding the Fourth Proportional to 12,543, 18,823.16 and 4,335

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Solution

The fourth proportional to 12,543, 18,823.16 and 4,335 is: 6,505.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543 : 18,823.16 = 4,335 : x
  2. Step 2: Convert to fraction form
    12,543/18,823.16 = 4,335/x
  3. Step 3: Cross multiply
    12,543x = 18,823.16 × 4,335
  4. Step 4: Simplify right side
    12,543x = 81,598,398.60
  5. Step 5: Solve for x
    x = 81,598,398.60/12,543
  6. Step 6: Final answer
    x = 6,505.49

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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.