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Finding the Fourth Proportional to 14,403, 21,555.70 and 8,859.85

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Solution

The fourth proportional to 14,403, 21,555.70 and 8,859.85 is: 13,259.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,403 : 21,555.70 = 8,859.85 : x
  2. Step 2: Convert to fraction form
    14,403/21,555.70 = 8,859.85/x
  3. Step 3: Cross multiply
    14,403x = 21,555.70 × 8,859.85
  4. Step 4: Simplify right side
    14,403x = 190,980,268.65
  5. Step 5: Solve for x
    x = 190,980,268.65/14,403
  6. Step 6: Final answer
    x = 13,259.76

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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.