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Finding the Fourth Proportional to 18,410.98, 27,613.74 and 6,721.47

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Solution

The fourth proportional to 18,410.98, 27,613.74 and 6,721.47 is: 10,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,410.98 : 27,613.74 = 6,721.47 : x
  2. Step 2: Convert to fraction form
    18,410.98/27,613.74 = 6,721.47/x
  3. Step 3: Cross multiply
    18,410.98x = 27,613.74 × 6,721.47
  4. Step 4: Simplify right side
    18,410.98x = 185,604,925.00
  5. Step 5: Solve for x
    x = 185,604,925.00/18,410.98
  6. Step 6: Final answer
    x = 10,081.21

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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.