Home / 15,186.36-20,956.16-9,520.88

Finding the Fourth Proportional to 15,186.36, 20,956.16 and 9,520.88

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Solution

The fourth proportional to 15,186.36, 20,956.16 and 9,520.88 is: 13,138.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.36 : 20,956.16 = 9,520.88 : x
  2. Step 2: Convert to fraction form
    15,186.36/20,956.16 = 9,520.88/x
  3. Step 3: Cross multiply
    15,186.36x = 20,956.16 × 9,520.88
  4. Step 4: Simplify right side
    15,186.36x = 199,521,037.02
  5. Step 5: Solve for x
    x = 199,521,037.02/15,186.36
  6. Step 6: Final answer
    x = 13,138.17

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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.