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Finding the Fourth Proportional to 14,904.56, 20,570.80 and 8,620.56

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Solution

The fourth proportional to 14,904.56, 20,570.80 and 8,620.56 is: 11,897.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,904.56 : 20,570.80 = 8,620.56 : x
  2. Step 2: Convert to fraction form
    14,904.56/20,570.80 = 8,620.56/x
  3. Step 3: Cross multiply
    14,904.56x = 20,570.80 × 8,620.56
  4. Step 4: Simplify right side
    14,904.56x = 177,331,815.65
  5. Step 5: Solve for x
    x = 177,331,815.65/14,904.56
  6. Step 6: Final answer
    x = 11,897.82

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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.