Home / 15,107.56-20,855.40-9,060.68

Finding the Fourth Proportional to 15,107.56, 20,855.40 and 9,060.68

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Solution

The fourth proportional to 15,107.56, 20,855.40 and 9,060.68 is: 12,507.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.56 : 20,855.40 = 9,060.68 : x
  2. Step 2: Convert to fraction form
    15,107.56/20,855.40 = 9,060.68/x
  3. Step 3: Cross multiply
    15,107.56x = 20,855.40 × 9,060.68
  4. Step 4: Simplify right side
    15,107.56x = 188,964,105.67
  5. Step 5: Solve for x
    x = 188,964,105.67/15,107.56
  6. Step 6: Final answer
    x = 12,507.92

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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.