Home / 15,121.24-20,859.04-9,660.08

Finding the Fourth Proportional to 15,121.24, 20,859.04 and 9,660.08

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Solution

The fourth proportional to 15,121.24, 20,859.04 and 9,660.08 is: 13,325.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.24 : 20,859.04 = 9,660.08 : x
  2. Step 2: Convert to fraction form
    15,121.24/20,859.04 = 9,660.08/x
  3. Step 3: Cross multiply
    15,121.24x = 20,859.04 × 9,660.08
  4. Step 4: Simplify right side
    15,121.24x = 201,499,995.12
  5. Step 5: Solve for x
    x = 201,499,995.12/15,121.24
  6. Step 6: Final answer
    x = 13,325.63

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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.