Home / 12,555.09-18,818.79-5,527.64

Finding the Fourth Proportional to 12,555.09, 18,818.79 and 5,527.64

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Solution

The fourth proportional to 12,555.09, 18,818.79 and 5,527.64 is: 8,285.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.09 : 18,818.79 = 5,527.64 : x
  2. Step 2: Convert to fraction form
    12,555.09/18,818.79 = 5,527.64/x
  3. Step 3: Cross multiply
    12,555.09x = 18,818.79 × 5,527.64
  4. Step 4: Simplify right side
    12,555.09x = 104,023,561.54
  5. Step 5: Solve for x
    x = 104,023,561.54/12,555.09
  6. Step 6: Final answer
    x = 8,285.37

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1.5x scale

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.