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Finding the Fourth Proportional to 14,907.79, 20,575.29 and 8,623.81

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Solution

The fourth proportional to 14,907.79, 20,575.29 and 8,623.81 is: 11,902.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,907.79 : 20,575.29 = 8,623.81 : x
  2. Step 2: Convert to fraction form
    14,907.79/20,575.29 = 8,623.81/x
  3. Step 3: Cross multiply
    14,907.79x = 20,575.29 × 8,623.81
  4. Step 4: Simplify right side
    14,907.79x = 177,437,391.65
  5. Step 5: Solve for x
    x = 177,437,391.65/14,907.79
  6. Step 6: Final answer
    x = 11,902.33

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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.