Home / 18,143.52-27,211.68-6,455.28

Finding the Fourth Proportional to 18,143.52, 27,211.68 and 6,455.28

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Solution

The fourth proportional to 18,143.52, 27,211.68 and 6,455.28 is: 9,681.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.52 : 27,211.68 = 6,455.28 : x
  2. Step 2: Convert to fraction form
    18,143.52/27,211.68 = 6,455.28/x
  3. Step 3: Cross multiply
    18,143.52x = 27,211.68 × 6,455.28
  4. Step 4: Simplify right side
    18,143.52x = 175,659,013.67
  5. Step 5: Solve for x
    x = 175,659,013.67/18,143.52
  6. Step 6: Final answer
    x = 9,681.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.