Home / 18,144.78-27,210.68-6,455.66

Finding the Fourth Proportional to 18,144.78, 27,210.68 and 6,455.66

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Solution

The fourth proportional to 18,144.78, 27,210.68 and 6,455.66 is: 9,681.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,144.78 : 27,210.68 = 6,455.66 : x
  2. Step 2: Convert to fraction form
    18,144.78/27,210.68 = 6,455.66/x
  3. Step 3: Cross multiply
    18,144.78x = 27,210.68 × 6,455.66
  4. Step 4: Simplify right side
    18,144.78x = 175,662,898.45
  5. Step 5: Solve for x
    x = 175,662,898.45/18,144.78
  6. Step 6: Final answer
    x = 9,681.18

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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.