Home / 15,065.90-20,786.72-8,777.06

Finding the Fourth Proportional to 15,065.90, 20,786.72 and 8,777.06

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Solution

The fourth proportional to 15,065.90, 20,786.72 and 8,777.06 is: 12,109.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,065.90 : 20,786.72 = 8,777.06 : x
  2. Step 2: Convert to fraction form
    15,065.90/20,786.72 = 8,777.06/x
  3. Step 3: Cross multiply
    15,065.90x = 20,786.72 × 8,777.06
  4. Step 4: Simplify right side
    15,065.90x = 182,446,288.64
  5. Step 5: Solve for x
    x = 182,446,288.64/15,065.90
  6. Step 6: Final answer
    x = 12,109.88

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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.