Home / 18,660.09-25,748.65-11,106.78

Finding the Fourth Proportional to 18,660.09, 25,748.65 and 11,106.78

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Solution

The fourth proportional to 18,660.09, 25,748.65 and 11,106.78 is: 15,326.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.09 : 25,748.65 = 11,106.78 : x
  2. Step 2: Convert to fraction form
    18,660.09/25,748.65 = 11,106.78/x
  3. Step 3: Cross multiply
    18,660.09x = 25,748.65 × 11,106.78
  4. Step 4: Simplify right side
    18,660.09x = 285,984,590.85
  5. Step 5: Solve for x
    x = 285,984,590.85/18,660.09
  6. Step 6: Final answer
    x = 15,326.00

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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.