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Finding the Fourth Proportional to 14,403.48, 21,609 and 4,543.08

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Solution

The fourth proportional to 14,403.48, 21,609 and 4,543.08 is: 6,815.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,403.48 : 21,609 = 4,543.08 : x
  2. Step 2: Convert to fraction form
    14,403.48/21,609 = 4,543.08/x
  3. Step 3: Cross multiply
    14,403.48x = 21,609 × 4,543.08
  4. Step 4: Simplify right side
    14,403.48x = 98,171,415.72
  5. Step 5: Solve for x
    x = 98,171,415.72/14,403.48
  6. Step 6: Final answer
    x = 6,815.81

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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.